redbug vs jigger

redbug and jigger both are nouns.

Word	Noun	Adjective	Verb	Adverb
redbug	Yes	No	No	No
jigger	Yes	No	No	No

As nouns, redbug and jigger are synonyms defined as:

redbug and jigger: larval mite that sucks the blood of vertebrates including human beings causing intense irritation

Other synonyms of redbug include chigger, harvest mite.

redbug (noun)	jigger (noun)
larval mite that sucks the blood of vertebrates including human beings causing intense irritation	larval mite that sucks the blood of vertebrates including human beings causing intense irritation
	a small glass adequate to hold a single swallow of whiskey
	any small mast on a sailing vessel; especially the mizzenmast of a yawl