Tackingasonto the goal ofwherepredictably has aneffecton the meaning of its root word . But unlikedisinterestedanduninterested , you ca n’t really ever get away with usingwhereasin a situation that call forwhere — or vice versa — without confusing your audience .
Because of the prevalence and versatility of the wordwhere , English speaker more often than not do a dear job of using it correctly without too much thought . If you ’re inquiring about the positioning of a bathroom , you probably would n’t unintentionally say , “ Whereas is the bathroom ? ” If you ’re talk about localisation at all , the term you want is almost definitelywhere .
So whereshouldyou usewhereas ? AsGrammarist explain , whereascomes before a subject article that you ’re trying to connect with a contrast autonomous article . If that ’s a little too jargon - y to make any sense , this illustration should help . countenance ’s say you start with this independent clause : We used to go clubbing on Saturday nights . Like all independent clauses , it ’s a complete sentence on its own . But maybe you require to enlarge by explaining what your Saturday Nox look like now . Since there ’s going to be a contrast between what you used to do and what you now do , whereascan splice the two together :

We used to go clubbing on Saturday Nox , whereas now we stay home and binge - watchDoctor Who .
Whereasisn’t the only co-occurrence that can accomplish this character of clausal union — while , although , and evenbutcan workplace , too ( though you might require to reorder thing to make the time flow better ) .
To make this slightly more confusing , whereasalso has a story of being used to introduce sound document in a elbow room that basically have in mind “ consider that . ” For contract , this introductory plane section — which fundamentally state the design of the document — is called arecital ; for constitutions , it ’s apreamble . In fact , kicking off a legal text file withwhereaswas common enough in the past tense that multitude just begin usingwhereasas a noun that meantpreamble . Feel barren to endeavor to get that trend back in your next perfunctory conversation about theConstitution .