thrasher vs threshing machine

thrasher and threshing machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
thrasher	Yes	No	No	No
threshing machine	Yes	No	No	No

As nouns, thrasher and threshing machine are synonyms defined as:

thrasher and threshing machine: a farm machine for separating seeds or grain from the husks and straw

Other synonyms of thrasher include thresher.

thrasher (noun)	threshing machine (noun)
thrush-like American songbird able to mimic other birdsongs	a farm machine for separating seeds or grain from the husks and straw
large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed
a farm machine for separating seeds or grain from the husks and straw