1. Cognizance (obsolete)

2.a.(1)  The fact or condition of knowing something with familiarity gained through experience or association.

His years of working closely with our customers have given him a great deal of knowledge about their needs and requirements.

2.a.(2) Acquaintance with or understanding of a science, art or technique.

Her knowledge of experimental design is unsurpassed.

2.b.(1) The fact or condition of being aware of something.

He had no knowledge of the physiological effects of marijuana.

2.b.(2) The range of one’s information or understanding.

To the best of her knowledge no agreement had been reached.

2.c. The circumstance or condition of apprehending truth or fact through reasoning: cognition.

3.     Sexual intercourse (archaic)

4.a. The sum of what is known: the body of truth, information, and principles acquired by mankind.

The libraries of the world constitute a vast treasure trove of knowledge.

4.b. A branch of learning (archaic)

1.     A sufficiency of means for the necessities and conveniences of life

2.     The quality or state of being competent, as in:

2.a. The properties of an embryonic field that enable it to respond in a characteristic manner to an organizer

2.b. The readiness of bacteria to undergo genetic transformation

3.     The knowledge that enables a person to speak and understand a language

1.     Proper or rightly pertinent

2.     Having requisite or adequate ability or qualities

3.     Legally qualified or adequate

4.     Having the capacity to function or develop in a particular way

Extensive knowledge, acquired chiefly from books : profound (deep), recondite (deep or obscure) or bookish learning

1.  The communication or reception of knowledge or intelligence.

2.a.(1) Knowledge obtained from investigation, study, or instruction

2.a.(2) Intelligence, news.

2.a.(3) Facts, data.

2.b. The attribute inherent in and communicated by one of two or more alternative sequences or arrangements of something that produce specific effects (e.g., binary digits in a computer program)

2.c.(1) A signal or character representing data

2.c.(2) Something (as a message, experimental data or a picture) which justifies change in a construct (as a plan or theory) that represents physical or mental experience or another construct

2.d. A quantitative measure of the content of information; specifically, a numerical quantity that measures the uncertainty in the outcome of an experiment to be performed

3.     The act of informing against a person

4. A formal accusation of a crime made by a prosecuting officers as distinguished from an indictment presented by a grand jury

The collection, classification, storage, retrieval, and dissemination of recorded knowledge treated both as a pure and an applied science.

verb transitive

1.a.(1) To perceive directly : have direct cognition of

1.a.(2) To have understanding of (know oneself)

1.a.(3) To recognize the nature of

1.b.(1) To recognize as being the same as something previously known

1.b.(2) To be acquainted or familiar with

1.b.(3) To have experience of

2.a. To be aware of the truth or factuality of

2.b. To have a practical understanding of (know how to write)

3.     To have sexual intercourse with (archaic)

verb intransitive

1.     To have knowledge

2.     To be or become cognizant

3.     To come to know (learn that he is ill)

verb intransitive

1.     To acquire knowledge or skill or a behavioral tendency (he can learn)

1.     The act or experience of one who learns

2.     Knowledge or skill acquired by instruction or study

3.     Modification of a behavioral tendency by experience

 Manage

verb transitive

1.     To handle or direct with a degree of skill

1.a. To make and keep compliant

1.b. To treat with care

1.c. To exercise executive, administrative, and supervisory direction of

2.     To work upon or try to alter for a purpose

3.     To succeed in accomplishing

4.     To direct the professional career of

verb intransitive

1.a. To direct or carry on business or affairs

1.b. To admit of being carried on

2.     To achieve one’s purpose

1.     The act or art of managing

2.     Judicious use of means to accomplish an end

3.     The collective body of those who manage or direct an enterprise

1.a. The execution of an action

1.b. Something accomplished.

2.     The fulfillment of a claim, promise, or request : implementation

3.a. The action of representing a character in a play

3.b. A public presentation or exhibition

4.a. The ability to perform

4.b. The manner in which a mechanism performs

5. The manner of reacting to stimuli : behavior

6. The linguistic behavior of an individual

Well advanced in an art, occupation, or branch of knowledge

Proficient implies a thorough competence derived from training and practice.

Adept implies special aptitude as well as proficiency.

Skilled stresses mastery of technique.

Skillful implies individual dexterity in execution or performance.

Expert implies extraordinary proficiency and often connotes knowledge as well as technical skill.

1.     Cause, reason (obsolete)

2.a. The ability to use one’s knowledge effectively and readily in execution or performance

2.b. Dexterity or coordination; especially in the execution of learned physical tasks

3.    A learned power of doing something competently : a developed aptitude or ability