instruct vs talk

instruct is not a noun while talk is a noun.

Word	Noun	Adjective	Verb	Adverb
instruct	No	No	Yes	No
talk	Yes	No	Yes	No

As verbs, talk is a hyponym of instruct; that is, talk is a word with a more specific, narrower meaning than instruct:

instruct (noun)	talk (noun)
	the act of giving a talk to an audience
	an exchange of ideas via conversation
	idle gossip or rumor
	a speech that is open to the public
	discussion; (`talk about' is a less formal alternative for `discussion of')

instruct (verb)	talk (verb)
impart skills or knowledge to	express in speech
give instructions or directions for some task	exchange thoughts; talk with
make aware of	reveal information
	use language
	deliver a lecture or talk
	divulge confidential information or secrets