In English, there are hundreds of nouns that don't follow the standard rules for pluralization. There are no easy ways to remember them, so they generally have to be memorized. Some of the rarer irregular plurals| GRAMMARIST
Nouns sometimes function as adjectives. For example, in each of these phrases, the first word is usually a noun but here functions as an adjective modifying the second word: city government, article writer, bicycle thief,| GRAMMARIST
Sentence structure is important, but sentence purpose is necessary for the reader to understand the function of a sentence. Understanding the different types of sentences you can use to make your writing clear and concise| GRAMMARIST
A phrase is a group of words functioning as a syntactical unit. It's a broad term, comprising groups of words of many different types and functions. Phrases function as all parts of speech, as both| GRAMMARIST
any member of a class of words that typically can be combined with determiners to serve as the subject of a verb, can be interpreted as singular or plural, can be replaced with a pronoun, and refer to an entity, quality, state, action, or concept… See the full definition| www.merriam-webster.com