put on vs flesh out

put on is an adjective but flesh out is not an adjective.

Word	Noun	Adjective	Verb	Adverb
put on	No	Yes	Yes	No
flesh out	No	No	Yes	No

As verbs, flesh out is a hyponym of put on; that is, flesh out is a word with a more specific, narrower meaning than put on:

Other hyponyms of put on include fill out, round, pack on.

put on (adjective)	flesh out (adjective)
adopted in order to deceive

put on (verb)	flesh out (verb)
put clothing on one's body	become round, plump, or shapely
increase (one's body weight)	add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
add to something existing	make fat or plump
add to the odometer
fool or hoax
coat, cover or smear a surface with
prepare and supply with the necessary equipment for execution or performance
carry out (performances)
put on the stove or ready for cooking