balaclava vs balaclava helmet

balaclava and balaclava helmet both are nouns.

Word	Noun	Adjective	Verb	Adverb
balaclava	Yes	No	No	No
balaclava helmet	Yes	No	No	No

As nouns, balaclava and balaclava helmet are synonyms defined as:

balaclava and balaclava helmet: a cap that is close-fitting and woolen and covers all of the head but the face

balaclava (noun)	balaclava helmet (noun)
a cap that is close-fitting and woolen and covers all of the head but the face	a cap that is close-fitting and woolen and covers all of the head but the face