Knows is the Third person singular simple present tense verb of 'know'.
How to use the word in a sentence.
It's a verb.
I do not know that word. Have you spelt it correctly
The term for knowing a word's part of speech in order to appropriately use it in a sentence is "word-usage."
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
The word known is a verb. It is the past participle of the verb know.
it helps the reader know how to use the word in a sentence
I don't know, but if a SPEECH is reiterated, it is repeated. Usually word for word.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word diplomacy is a noun.
The part of speech for the word "boulevard" is a noun.