subscription vs subscribe

subscription is a noun but subscribe is not a noun.

Word	Noun	Adjective	Verb	Adverb
subscription	Yes	No	No	No
subscribe	No	No	Yes	No

subscription (noun)	subscribe (noun)
a pledged contribution
the act of signing your name; writing your signature (as on a document)
agreement expressed by (or as if expressed by) signing your name
a payment for consecutive issues of a newspaper or magazine for a given period of time

subscription (verb)	subscribe (verb)
	mark with one's signature; write one's name (on)
	adopt as a belief
	receive or obtain regularly
	offer to buy, as of stocks and shares
	pay (an amount of money) as a contribution to a charity or service, especially at regular intervals