grade insignia vs chevron

grade insignia and chevron both are nouns.

Word	Noun	Adjective	Verb	Adverb
grade insignia	Yes	No	No	No
chevron	Yes	No	No	No

As nouns, grade insignia and chevron are synonyms defined as:

grade insignia and chevron: V-shaped sleeve badge indicating military rank and service

Other synonyms of grade insignia include stripe, stripes.

grade insignia (noun)	chevron (noun)
V-shaped sleeve badge indicating military rank and service	an inverted V-shaped charge
	V-shaped sleeve badge indicating military rank and service