gaffer vs straw boss

gaffer and straw boss both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaffer	Yes	No	No	No
straw boss	Yes	No	No	No

As nouns, straw boss is a hyponym of gaffer; that is, straw boss is a word with a more specific, narrower meaning than gaffer:

Other hyponyms of gaffer include baas, ganger, assistant foreman.

gaffer (noun)	straw boss (noun)
a person who exercises control over workers	a member of a work gang who supervises the other workers
an elderly man
an electrician responsible for lighting on a movie or tv set