Upon is a preposition.
"Along" is an adverb, or sometimes a preposition, depending upon how it is used in a sentence.
It can be either a noun or an adjective, depending upon its use in a sentence.
"Afterward" .. is a preposition which specifies location. Before, in, upon, through, above, within ... etc
adverb
The word unto is a preposition. It indicates a motion towards something.
A phrase is never a part of speech, only a word.
"Along" is an adverb, or sometimes a preposition, depending upon how it is used in a sentence.
It can be either a noun or an adjective, depending upon its use in a sentence.
Either a noun or a verb, depending upon the context. It is generally considered to be a noun.
Pressure is a noun. It refers to the force exerted upon a surface or object by the weight of something above it.
The part of speech for this particular word is a noun.
part of speech
"Afterward" .. is a preposition which specifies location. Before, in, upon, through, above, within ... etc
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.