public lavatory vs comfort station

public lavatory and comfort station both are nouns.

Word	Noun	Adjective	Verb	Adverb
public lavatory	Yes	No	No	No
comfort station	Yes	No	No	No

As nouns, public lavatory and comfort station are synonyms defined as:

public lavatory and comfort station: a toilet that is available to the public

Other synonyms of public lavatory include convenience, public convenience, public toilet, restroom, toilet facility, wash room.

public lavatory (noun)	comfort station (noun)
a toilet that is available to the public	a toilet that is available to the public