Sign up (two words) is the verb — “Please sign up here.” Sign-up (hyphenated) is the noun or adjective — ...

Log in (two words) is the verb — ‘Please log in to your account.’ Login (one word) is the noun ...

Set up (two words) is the verb — ‘Please set up your account.’ Setup (one word) is the noun or ...

Have you ever stopped while writing because you were unsure whether to use altogether or all together? You are not ...

Have you ever stopped while writing because you were unsure whether to use awhile or a while? You are not ...

Everyday is an adjective meaning ordinary or daily — ‘everyday shoes’, ‘everyday life’. Every day is a phrase meaning each ...

Practice is the noun in both British and American English, and the only spelling in American English. In British English, ...

Principal means the main person or thing — the head of a school, the main sum of money in a ...

Imply means to suggest something without saying it directly — the speaker implies. Infer means to work out what someone ...