as
"As" is a small but incredibly useful word in English. It works in several different ways — as a conjunction, a preposition, and an adverb — and you will see it constantly in everyday speech and writing. Here are the most common and important ways it is used.
2conjunctionbecause / since
In figurative language, 'as' is used in similes — comparisons that describe something by saying it is like something else. This makes descriptions more vivid and imaginative.
literature, everyday language · Modern, widely used · figurative