gusset vs gusset plate

gusset and gusset plate both are nouns.

Word	Noun	Adjective	Verb	Adverb
gusset	Yes	No	No	No
gusset plate	Yes	No	No	No

As nouns, gusset and gusset plate are synonyms defined as:

gusset (noun)	gusset plate (noun)
a piece of material used to strengthen or enlarge a garment	a metal plate used to strengthen a joist
a metal plate used to strengthen a joist
a piece of chain mail covering a place unprotected by armor plate