jack of all trades vs odd-job man

jack of all trades and odd-job man both are nouns.

Word	Noun	Adjective	Verb	Adverb
jack of all trades	Yes	No	No	No
odd-job man	Yes	No	No	No

As nouns, jack of all trades and odd-job man are synonyms defined as:

jack of all trades and odd-job man: a man skilled in various odd jobs and other small tasks

Other synonyms of jack of all trades include handyman.

jack of all trades (noun)	odd-job man (noun)
a man skilled in various odd jobs and other small tasks	a man skilled in various odd jobs and other small tasks