milt vs semen

milt and semen both are nouns.

Word	Noun	Adjective	Verb	Adverb
milt	Yes	No	No	No
semen	Yes	No	No	No

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

milt: seminal fluid produced by male fish
semen: the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

Other hypernyms of milt include come, cum, ejaculate, seed, seminal fluid.

milt (noun)	semen (noun)
seminal fluid produced by male fish	the thick white fluid containing spermatozoa that is ejaculated by the male genital tract
fish sperm or sperm-filled reproductive gland; having a creamy texture