triceps vs striated muscle

triceps and striated muscle both are nouns.

Word	Noun	Adjective	Verb	Adverb
triceps	Yes	No	No	No
striated muscle	Yes	No	No	No

As nouns, striated muscle is a hypernym of triceps; that is, striated muscle is a word with a broader meaning than triceps:

triceps: any skeletal muscle having three origins (but especially the triceps brachii)
striated muscle: a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes

Other hypernyms of triceps include skeletal muscle.

triceps (noun)	striated muscle (noun)
any skeletal muscle having three origins (but especially the triceps brachii)	a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes