Was is a verb. It is a past tense singular be verb.
possesive pronoun
The term "part of speech" has been replaced in favor of the term "word classes". Neurolinguistics deals with grammar which is where word classes belong.
Belong is a verb.
Tropical in parts of speech
The word "tropical" can function as an adjective.
The word "appropriate" can function as both an adjective and a verb.
a pronoun
Ropnoun
The word him is a pronoun.
Ropnoun
The word him is a pronoun.
The word "word" can be a noun or a verb. As a noun, it refers to a unit of language that carries meaning. As a verb, it means to communicate in speech or writing.