glans vs glans penis

glans and glans penis both are nouns.

Word	Noun	Adjective	Verb	Adverb
glans	Yes	No	No	No
glans penis	Yes	No	No	No

As nouns, glans penis is a hyponym of glans; that is, glans penis is a word with a more specific, narrower meaning than glans:

glans: a small rounded structure; especially that at the end of the penis or clitoris
glans penis: the conical mass of erectile tissue that forms the head of the penis

Other hyponyms of glans include glans clitoridis.

glans (noun)	glans penis (noun)
a small rounded structure; especially that at the end of the penis or clitoris	the conical mass of erectile tissue that forms the head of the penis