posthouse vs lodge

posthouse and lodge both are nouns.

Word	Noun	Adjective	Verb	Adverb
posthouse	Yes	No	No	No
lodge	Yes	No	Yes	No

As nouns, lodge is a hypernym of posthouse; that is, lodge is a word with a broader meaning than posthouse:

Other hypernyms of posthouse include auberge, hostel, hostelry, inn.

posthouse (noun)	lodge (noun)
an inn for exchanging post horses and accommodating riders	any of various Native American dwellings
	a hotel providing overnight lodging for travelers
	a small (rustic) house used as a temporary shelter
	small house at the entrance to the grounds of a country mansion; usually occupied by a gatekeeper or gardener
	a formal association of people with similar interests