It varies depending on the dictionary you consult. Because it's derived from the proper noun World Wide Web, it started out as two words with Web capitalized. Webster's dictionary still lists it as such. Oxford dictionary lists Web site first with web site and website as variations. The American Heritage dictionary lists it as website with Web site as a variation. In everyday usage, website is far more common. You could defend either spelling, but for formal circumstances (like a school paper), Web site would be the safest.
Factbook is one word. Both on the website and offline.
It is two words. Writing it as one is acceptable in the UK and is referred to as a "Britishism." But in American grammar, it is always two separate words.
Website is regarded as one word these days. It used to be two words (web site) and is still written that way by some people (mostly older generations). But due to the evolution of the English language, the preferred spelling is one word.
Two words - "one day".
I recommend class work, as two words.
It is two words.
Two words.
It's two words. :)
It is two separate words.
Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.Its not one word, its actually two words: Pax Romana.
One. When you say pickpocket, no one says as two words, they say it as one.
It can be either one or two words.