Have help, as in I have help from my friends when I need a boost, is a predicate consisting of the verb have and the noun help.
Have helped, as in I have helped the teacher clean the blackboards, is a verb phrase consisting of the helping verb have and the past participle helped.
An adverb
i need help
pronoun
The word 'can' is an auxiliary verb. The complete verb is 'can help'. (You can help me...)
The part of speech for this particular word is a noun.
part of speech
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 "answer" is a noun.
adverb
what part of speech is beneath
chose the right words to describe the product
The part of speech for "unfamiliar" is an adjective.