2 words in this vocabulary list
noun a noun is a word that represents a person, place, thing, or idea. In this case, 'research' is a noun because it refers to the systematic investigation into a subject in order to discover facts, establish a theory, or reach a conclusion.
noun a word that represents a person, place, thing, or idea
verb a word that expresses an action, occurrence, or state of being
adverb a word that modifies or describes a verb, adjective, or another adverb
preposition a word that shows the relationship between a noun (or pronoun) and other words in a sentence