"Climbed" is the past of "climb".
Yes, "he climbed" is regular (simple) past tense.
The past tense is climbed.
The simple past tense is climbed.
I had climbed.
No, it is not a verb. Clime is a noun (a climate).
No, it is not. It is the past tense and past participle of the verb to climb, and might rarely be used as an adjective (e.g. climbed mountains as opposed to unclimbed).
A noun is a person, place, or thing. Climb or climbed is an action and therefore a verb (past tense verb in the case of climbed).
It might be, rarely, as in climbed mountains versus unclimbed mountains).But it is usually a verb. It is the past tense and past participle of the verb "to climb."
No, "clumb" is not a recognized word in the English language. The past tense of "climb" is "climbed."
Adding -ed makes a verb a past tense verb. This means the action happened in the past. ie. I climb a tree. (present tense) Yesterday, I climbed a tree. (past tense)
Generally, many verbs will add "ed" to the ending to symbolize that it is the past tense. Example: Walked, Jumped, Hugged, Climbed, Played.
It can be different parts of speech.Adjective: The climbing vine is taking over the side of the house.Verb: He was climbing the ladder.Noun: Climbing is my favorite sport.