ordinary bicycle vs bicycle

ordinary bicycle and bicycle both are nouns.

Word	Noun	Adjective	Verb	Adverb
ordinary bicycle	Yes	No	No	No
bicycle	Yes	No	Yes	No

As nouns, bicycle is a hypernym of ordinary bicycle; that is, bicycle is a word with a broader meaning than ordinary bicycle:

ordinary bicycle: an early bicycle with a very large front wheel and small back wheel
bicycle: a wheeled vehicle that has two wheels and is moved by foot pedals

Other hypernyms of ordinary bicycle include bike, cycle, wheel.

ordinary bicycle (noun)	bicycle (noun)
an early bicycle with a very large front wheel and small back wheel	a wheeled vehicle that has two wheels and is moved by foot pedals

ordinary bicycle (verb)	bicycle (verb)
	ride a bicycle