The word because is used when we express the reason or cause of something. Sometimes, we use it on its own, and other times, we use because of . Both of them give reasons, but grammatically, they are used in different situations.

Why do we use the word because?

Because of is a two-word preposition meaning 'as a result of': Because of the rain, the tennis match was stopped. There were so many people in the shop because of the sale.

How do we use because?

Because of and because are both used to introduce reasons. Because of is a preposition, it is generally followed by a verb+ing or a noun. Because is a conjunction, it is followed by a subject and a verb. ... 'was feeling' the verb.