halobacterium vs halophile

halobacterium and halophile both are nouns.

Word	Noun	Adjective	Verb	Adverb
halobacterium	Yes	No	No	No
halophile	Yes	No	No	No

As nouns, halophile is a hypernym of halobacterium; that is, halophile is a word with a broader meaning than halobacterium:

halobacterium: halophiles in saline environments such as the Dead Sea or salt flats
halophile: archaebacteria requiring a salt-rich environment for growth and survival

Other hypernyms of halobacterium include halophil.

halobacterium (noun)	halophile (noun)
halophiles in saline environments such as the Dead Sea or salt flats	archaebacteria requiring a salt-rich environment for growth and survival