semen vs liquid body substance

semen and liquid body substance both are nouns.

Word	Noun	Adjective	Verb	Adverb
semen	Yes	No	No	No
liquid body substance	Yes	No	No	No

As nouns, liquid body substance is a hypernym of semen; that is, liquid body substance is a word with a broader meaning than semen:

semen: the thick white fluid containing spermatozoa that is ejaculated by the male genital tract
liquid body substance: the liquid parts of the body

Other hypernyms of semen include bodily fluid, body fluid, humor, humour.

semen (noun)	liquid body substance (noun)
the thick white fluid containing spermatozoa that is ejaculated by the male genital tract	the liquid parts of the body