park vs parallel-park

park is a noun but parallel-park is not a noun.

Word	Noun	Adjective	Verb	Adverb
park	Yes	No	Yes	No
parallel-park	No	No	Yes	No

As verbs, parallel-park is a hyponym of park; that is, parallel-park is a word with a more specific, narrower meaning than park:

Other hyponyms of park include angle-park, double-park.

park (noun)	parallel-park (noun)
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

park (verb)	parallel-park (verb)
place temporarily	park directly behind another vehicle
maneuver a vehicle into a parking space