equipage vs post chaise

equipage and post chaise both are nouns.

Word	Noun	Adjective	Verb	Adverb
equipage	Yes	No	No	No
post chaise	Yes	No	No	No

As nouns, post chaise is a hyponym of equipage; that is, post chaise is a word with a more specific, narrower meaning than equipage:

equipage: a vehicle with wheels drawn by one or more horses
post chaise: closed horse-drawn carriage with four wheels; formerly used to transport passengers and mail

equipage (noun)	post chaise (noun)
a vehicle with wheels drawn by one or more horses	closed horse-drawn carriage with four wheels; formerly used to transport passengers and mail
equipment and supplies of a military force