Verb "walk" noun "walk" one word or tw

[kitty]

Hi, I have a question on lexicology. That is ,verb "walk" and Noun "walk", how do you understand, are they two words or one word?

[Mister Micawber]

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I think they've been the same word for a long time, Kitty. From the Online Etymological Dictionary (q.v.):

walk (n.) c.1386, "act of walking".
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Native English teacher at Mister Micawber's