The noun forms of the verb to know are knowledge and the gerund, knowing.
The word 'know' functions as a noun in the term 'in the know', defined as having information possessed only by a small group of people.
The noun form of the verb "know" is "knowledge."
The word 'know' is a verb, not a noun at all. The noun form is knowledge or knowing.
The word 'knew' is the past tense of the verb 'to know'. The noun form for the verb to know is knower, one who knows; and the gerund (verbal noun) knowing."Knowledge" is a noun of the same root of "knew."
The abstract noun forms of the verb to know are knowledgeand the gerund, knowing.
The word 'know' can be an abstract noun for example, in the expression 'in the know' or the compound noun 'know how'.The abstract noun form for the verb 'to know' is the gerund knowing.A related abstract noun form is knowledge.
ability is the noun form of the adjective able;conversation is the noun form of the verb to converse;dependence is the noun form of the verb to depend;departure is the noun form of the verb to depart;dwelling is the noun form of the verb to dwell;favorite is the noun form of the verb to favor;happiness is the noun form of the adjective happy;information is the noun form of the verb to inform;rarity is the noun form of the adjective rare;weakness is the noun form of the adjective weak;writer is the noun form of the verb to write;writing is also a noun form of the verb to write.
The abstract noun forms for the verb 'to know' are the gerund 'knowing' and 'knower', one who knows. A related abstract noun form is knowledge.
The word 'noun' is not a verb. The word 'noun' is a noun, a word for a thing.
The noun forms for the verb to know are knower (one who knows), and the gerund (verbal noun) knowing. A related noun form is knowledge. The word 'know' is a noun as well as a verb; to be in the know (a word for the state of being informed, aware).
As far as I know there is no verb form for petty. Not all words have verb noun adjective forms.
"Stupidity and stupid" are nouns. It is not common to turn a noun into a verb - and even then it is not correct practice. I know of no verb form of 'stupidity'.
The word 'know' can be an abstract noun for example, in the expression 'in the know' or the compound noun 'know how'.The abstract noun form for the verb 'to know' is the gerund knowing.A related abstract noun form is knowledge.