straw boss vs assistant foreman

straw boss and assistant foreman both are nouns.

Word	Noun	Adjective	Verb	Adverb
straw boss	Yes	No	No	No
assistant foreman	Yes	No	No	No

As nouns, straw boss and assistant foreman are synonyms defined as:

straw boss and assistant foreman: a member of a work gang who supervises the other workers

straw boss (noun)	assistant foreman (noun)
a member of a work gang who supervises the other workers	a member of a work gang who supervises the other workers