let vs permit

let and permit both are nouns.

Word	Noun	Adjective	Verb	Adverb
let	Yes	No	Yes	No
permit	Yes	No	Yes	No

As verbs, let and permit are synonyms defined as:

Other synonyms of let include allow, countenance.

As verbs, permit is a hyponym of let; that is, permit is a word with a more specific, narrower meaning than let:

let: consent to, give permission; permit
permit: allow the presence of or allow (an activity) without opposing or prohibiting

As verbs, let and permit are synonyms defined as:

let and permit: make it possible through a specific action or lack of action for something to happen

Other synonyms of let include allow.

let (noun)	permit (noun)
a serve that strikes the net before falling into the receiver's court; the ball must be served again	the act of giving a formal (usually written) authorization
	large game fish; found in waters of the West Indies
	a legal document giving official permission to do something

let (verb)	permit (verb)
leave unchanged	consent to, give permission; permit
cause to move; cause to be in a certain position or condition	allow the presence of or allow (an activity) without opposing or prohibiting
actively cause something to happen	make it possible through a specific action or lack of action for something to happen
consent to, give permission; permit
grant use or occupation of under a term of contract
make it possible through a specific action or lack of action for something to happen