scarer vs scarecrow

scarer and scarecrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
scarer	Yes	No	No	No
scarecrow	Yes	No	No	No

As nouns, scarer and scarecrow are synonyms defined as:

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

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

scarer (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