straw man vs scarecrow

straw man and scarecrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
straw man	Yes	No	No	No
scarecrow	Yes	No	No	No

As nouns, straw man and scarecrow are synonyms defined as:

straw man and scarecrow: an effigy in the shape of a man to frighten birds away from seeds

Other synonyms of straw man include bird-scarer, scarer, strawman.

straw man (noun)	scarecrow (noun)
an effigy in the shape of a man to frighten birds away from seeds	an effigy in the shape of a man to frighten birds away from seeds
a weak or sham argument set up to be easily refuted
a person used as a cover for some questionable activity