know / no are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
know: (noun) the fact of being aware of information that is known to few people. (verb) be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about. (verb) know how to do or perform something. (verb) be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt. (verb) be familiar or acquainted with a person or an object. (verb) have firsthand knowledge of states, situations, emotions, or sensations. (verb) have fixed in the mind. (verb) know the nature or character of. (verb) be able to distinguish, recognize as being different. (verb) perceive as familiar.
no: (noun) a negative. (adjective) quantifier; used with either mass nouns or plural count nouns for indicating a complete or almost complete lack or zero quantity of. (adverb) referring to the degree to which a certain quality is present. (adverb) not in any degree or manner; not at all. (adverb) used to express refusal or denial or disagreement etc or especially to emphasize a negative statement.
know: n·OW
no: n·OW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)