Because/(কারণ)

By or for the cause that; on this account that; for the reason that. In order that; that.

Adverb

For the reason (that). On account (of), for sake (of). (by ellipsis) Used alone to refuse to provide a full answer a question begun with "why", usually taken as an anapodoton of the elided full phrase "Because I said so".

Preposition

On account of, because of.