halophile vs halobacter

halophile and halobacter both are nouns.

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

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

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

Other hyponyms of halophile include halobacteria, halobacterium.

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