shinpad vs shin guard

shinpad and shin guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
shinpad	Yes	No	No	No
shin guard	Yes	No	No	No

As nouns, shinpad and shin guard are synonyms defined as:

shinpad and shin guard: a stiff protective garment worn by hockey players or a catcher in baseball to protect the shins

shinpad (noun)	shin guard (noun)
a stiff protective garment worn by hockey players or a catcher in baseball to protect the shins	a stiff protective garment worn by hockey players or a catcher in baseball to protect the shins