"Part of speech or part-of-speech (abbreviated as POS or PoS, also known as word class or grammatical category) is a category of words that have similar grammatical properties."
Parts of speech are the basic categories of words. These categories include nouns, verbs, adjectives, adverbs, prepositions, pronouns, conjunctions, and interjections.
Nouns: A person, place, thing, or idea.
Verbs: An action word or a state of being.
Adjectives: A word that describes a noun or pronoun.
Adverbs: A word that modifies a verb, adjective, or another adverb.
Pronouns: A word that replaces a noun or group of nouns.
Prepositions: A word that shows a relationship between a noun or pronoun and other words in a sentence.
Conjunctions: A word that connects words, phrases, or clauses.
Interjections: A word or phrase that expresses strong emotion.
Articles: A word that is used to identify a noun as specific or unspecific.
Infinitives: A verbal noun that can function as a subject, direct object, or complement.
Noun: A word that represents a person, place, thing, or idea. Examples: dog, table, love.
Pronoun: A word that takes the place of a noun or noun phrase. Examples: he, she, it.
Verb: A word that expresses an action or state of being. Examples: run, jump, is.
Adjective: A word that describes or modifies a noun or pronoun. Examples: beautiful, tall, happy.
Adverb: A word that describes or modifies a verb, adjective, or other adverb. Examples: quickly, very, well.
Preposition: A word that shows the relationship between a noun or pronoun and other words in a sentence. Examples: in, on, under.
Conjunction: A word that connects words, phrases, or clauses. Examples: and, but, or.
Interjection: A word or phrase that expresses strong emotion or surprise. Examples: wow, oh, ouch.
Articles: A, An, and The: Used with nouns to specify, identify and point out the particular or general nouns.
Determiners: Words that come before a noun to show what it refers to, whether it’s singular or plural, and how much of it there is. Examples: the, a, that.
Quantifiers: Words that are used with nouns to show quantity or amount. Examples: some, many, few.
Auxiliary verbs: Words that are used with main verbs to show tense, mood and voice. Examples: have, be, do.
Gerunds: Verbs ending in "-ing" form nouns. Examples: running, reading, singing.
Infinitives: The base form of a verb preceded by "to" which can also function as a noun, adjective, or adverb. Example: to sing, to go, to eat.
Participles: Verb forms that function as adjectives. Examples: cooked, fallen, broken.
"Commonly listed English parts of speech are noun, verb, adjective, adverb, pronoun, preposition, conjunction, interjection, numeral, article, and determiner."
"Open classes (typically including nouns, verbs, and adjectives) acquire new members constantly, while closed classes (such as pronouns and conjunctions) acquire new members infrequently, if at all."
"Words that are assigned to the same part of speech generally display similar syntactic behavior (they play similar roles within the grammatical structure of sentences)."
"Yes, almost all languages have the word classes noun and verb, but beyond these two, there are significant variations among different languages."
"The labels for each category are assigned on the basis of universal criteria."
"Many languages do not distinguish between adjectives and adverbs, or between adjectives and verbs."
"Some authors restrict the term lexical category to refer only to a particular type of syntactic category."
"Other terms than part of speech—particularly in modern linguistic classifications [...] include word class, lexical class, and lexical category."
"Words that are assigned to the same part of speech [...] even display similar morphological behavior in that they undergo inflection for similar properties."
"Almost all languages have the word classes noun and verb, but beyond these two, there are significant variations among different languages."
"Japanese has as many as three classes of adjectives, where English has one."
"Chinese, Korean, Japanese, and Vietnamese have a class of nominal classifiers."
"For them, the term excludes those parts of speech that are considered to be function words, such as pronouns."
"The term form class is also used, although this has various conflicting definitions."
"Open classes (typically including nouns, verbs, and adjectives) acquire new members constantly."
"Other terms than part of speech—particularly in modern linguistic classifications, which often make more precise distinctions than the traditional scheme does."
"Because of such variation in the number of categories and their identifying properties, analysis of parts of speech must be done for each individual language."
"Closed classes (such as pronouns and conjunctions) acquire new members infrequently, if at all."
"Almost all languages have the word classes noun and verb, but beyond these two, there are significant variations among different languages."