Answer :
Here are definitions for each of the terms related to English that you asked about:
Synonym: A synonym is a word that has the same or nearly the same meaning as another word. For example, 'happy' is a synonym for 'joyful.' Synonyms are useful for adding variety to writing and avoiding repetition.
Antonym: An antonym is a word that has the opposite meaning of another word. For example, 'hot' is an antonym for 'cold.' Knowing antonyms helps in understanding contrasts and comparisons.
Proper Noun: A proper noun is the specific name of a particular person, place, or thing. Proper nouns are always capitalized. For example, 'London,' 'Sarah,' and 'Eiffel Tower' are proper nouns.
Abstract Noun: An abstract noun is a noun that refers to an idea, quality, or state rather than a concrete object. Examples include 'freedom,' 'happiness,' and 'wisdom.' These nouns are intangible and cannot be seen or touched.
Personal Pronoun: A personal pronoun is a word that replaces a specific noun and denotes a particular person, group, or thing. Examples include 'he,' 'she,' 'they,' and 'we.' Personal pronouns help avoid repetitive use of nouns.
Plural Noun: A plural noun represents more than one person, animal, place, thing, or idea. Plural nouns typically have an 's' or 'es' at the end, such as 'cats' or 'bushes.'
Singular Noun: A singular noun refers to one person, place, thing, or idea. For example, 'cat,' 'city,' and 'tree' are singular nouns.
Alliteration: Alliteration is a literary device where two or more words in a sentence begin with the same consonant sound. For example, 'Peter Piper picked a peck of pickled peppers.' It's often used for poetic effect or emphasis.
Compound Noun: A compound noun is made up of two or more words that function as a single noun. The words can be joined together ('toothpaste'), hyphenated ('mother-in-law'), or separate ('bus stop').
Adjective: An adjective is a word that describes or modifies a noun or pronoun. It provides more information about size, color, shape, etc. For example, in "The red apple is delicious," 'red' and 'delicious' are adjectives that describe the apple.