myxomycete vs slime mold

myxomycete and slime mold both are nouns.

Word	Noun	Adjective	Verb	Adverb
myxomycete	Yes	No	No	No
slime mold	Yes	No	No	No

As nouns, slime mold is a hypernym of myxomycete; that is, slime mold is a word with a broader meaning than myxomycete:

myxomycete: a slime mold of the class Myxomycetes
slime mold: a naked mass of protoplasm having characteristics of both plants and animals; sometimes classified as protoctists

Other hypernyms of myxomycete include slime mould.

myxomycete (noun)	slime mold (noun)
a slime mold of the class Myxomycetes	a naked mass of protoplasm having characteristics of both plants and animals; sometimes classified as protoctists