bicycle rack vs bicycle parking rack

bicycle rack and bicycle parking rack both are nouns.

Word	Noun	Adjective	Verb	Adverb
bicycle rack	Yes	No	No	No
bicycle parking rack	Yes	No	No	No

As nouns, bicycle rack and bicycle parking rack are synonyms defined as:

Other synonyms of bicycle rack include bicycle stand, bike parking rack, bike rack, bike stand.

bicycle rack (noun)	bicycle parking rack (noun)
a rack for parking bicycles	a rack for parking bicycles