parking lot vs park

parking lot and park both are nouns.

Word	Noun	Adjective	Verb	Adverb
parking lot	Yes	No	No	No
park	Yes	No	Yes	No

As nouns, parking lot and park are synonyms defined as:

Other synonyms of parking lot include car park, parking area.

parking lot (noun)	park (noun)
a lot where cars are parked	a facility in which ball games are played (especially baseball games)
	a gear position that acts as a parking brake
	a large area of land preserved in its natural state as public property
	a piece of open land for recreational use in an urban area
	a lot where cars are parked

parking lot (verb)	park (verb)
	place temporarily
	maneuver a vehicle into a parking space