whereas
conj.conj. used to compare two things and show how they are different. You use it to connect two parts of a sentence that have opposite ideas.
conj. used to introduce a subordinate clause that contrasts with the main clause. Functions as a subordinating conjunction to highlight a specific difference between two subjects or situations.
He loves the mountains, whereas his wife prefers the beach.
The first contract allows for immediate termination, whereas the second requires a thirty-day notice period.
In many European jurisdictions, the burden of proof rests heavily on the state, whereas in certain administrative hearings, the respondent must actively demonstrate compliance with the regulation.
From where + as (“that”); first attested in the meaning of "where" in the 14th century. Compare thereas.
Typically used to join two independent clauses; a comma is usually required before it when it appears in the middle of a sentence.
He is tall whereas his brother.He is tall, whereas his brother is short.Whereas is a conjunction, not a preposition; it must be followed by a full clause with a subject and a verb, not just a noun.