anchor vs fasten

anchor is a noun but fasten is not a noun.

Word	Noun	Adjective	Verb	Adverb
anchor	Yes	No	Yes	No
fasten	No	No	Yes	No

As verbs, fasten is a hypernym of anchor; that is, fasten is a word with a broader meaning than anchor:

Other hypernyms of anchor include fix, secure.

As verbs, fasten is a hypernym of anchor; that is, fasten is a word with a broader meaning than anchor:

Other hypernyms of anchor include fix, secure.

anchor (noun)	fasten (noun)
a mechanical device that prevents a vessel from moving
a central cohesive source of support and stability
a television reporter who coordinates a broadcast to which several correspondents contribute

anchor (verb)	fasten (verb)
secure a vessel with an anchor	make tight or tighter
fix firmly and stably	become fixed or fastened
	cause to be firmly attached
	attach to