Jumps is a verb. It describes an action.
Jumped is a verb. It's the past tense of jump.
The word clue is a noun, as in, the detective was looking for a clue. It is used in an idiomatic way as a verb, as in, I would like somebody to clue me in.
A verb is a word that describes an action. For example: "Billy jumps." Jumps is the verb. "Daryl dances." Dances is the verb. If you are asking about the word "speech," it is a noun, but it can become a verb: to speak.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is work
what part of speech is beneath
Sashay is a verb. It means to walk in an exaggerated, showy manner, often with hip swaying.
Adjective
The word speech is a noun.
Yes, conjunction is a part of speech.