park vs parking lot

park and parking lot both are nouns.

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

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

Other synonyms of park include car park, parking area.

park (noun)	parking lot (noun)
a facility in which ball games are played (especially baseball games)	a lot where cars are parked
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

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