triceps vs skeletal muscle

triceps and skeletal muscle both are nouns.

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

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

triceps: any skeletal muscle having three origins (but especially the triceps brachii)
skeletal 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 striated muscle.

triceps (noun)	skeletal 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