gaffer vs foreman

gaffer and foreman both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaffer	Yes	No	No	No
foreman	Yes	No	No	No

As nouns, gaffer and foreman are synonyms defined as:

Other synonyms of gaffer include boss, chief, honcho.

gaffer (noun)	foreman (noun)
a person who exercises control over workers	a person who exercises control over workers
an elderly man	a man who is foreperson of a jury
an electrician responsible for lighting on a movie or tv set