Grammar

Flavour is the British English spelling. Flavor is the American English spelling. Both words mean the same thing. The difference depends on whether you follow UK or US spelling conventions.…

Concave means curved inward, like the inside of a bowl. Convex means curved outward, like the outside of a ball. In geometry, lenses, mirrors, and polygons, concave shapes bend inward…

Forward and forwards both mean moving toward the front. The key difference is usage by region and context. In American English, forward is standard in almost all cases. In British…

Whoa is the traditional and widely accepted spelling used to express surprise, excitement, or to tell someone or something to slow down. Woah is a common misspelling that appears frequently…

Constant means continuous, unchanging, or happening all the time without stopping. Consistent means regular, steady, or always behaving in the same way over time. Use constant for something that does…

Rational is an adjective that describes something logical, reasonable, or based on clear thinking. Rationale is a noun that means the underlying reason, explanation, or justification for something. Use rational…

In fact is the correct form and is written as two separate words. Infact is not a standard English word and is considered incorrect in formal and informal writing. Always…

Pick up is a verb phrase that means to lift, collect, gather, or improve. Pickup is usually a noun or adjective, such as a pickup truck or a pickup in…

In-between is the correct standard spelling when used as an adjective or noun. In between as two separate words is also correct when used as a prepositional phrase. Inbetween written…

Ensure means to make certain or guarantee that something happens. Insure means to arrange financial protection, usually through an insurance policy. Use ensure when you mean guarantee. Use insure when…