one
No. It is two words, every night.The word everyday actually means ordinary, not happening every day.
"In fact" is always two words. The following sentence is an example that demonstrates its use: The necklace was, in fact, the very one I had seen his wife wearing the night before.
its 3 words
Good night (using two words) is the proper form. However, good-night (hyphenated) can also be correct in the proper context. Example: -A farewell or leave-taking: He said his good-nights before leaving the party. -Compare this to actual farewell address: He said good night before leaving the party. The confusion is generally with good-night and goodnight because both are correct. When using it as a salutation, good night (two words) is always correct; however, in other context as in the example above you have a choice between leaving it one word or hyphenating it.
Nightlife is one word. It is a compound word. If you do not believe me look on google.com. Nightlife refers to what you do at night. Exactly as it seems.
No, it is nighttime (as is seen in daytime).
Two words - "one day".
It is one word, nighttime, as in daytime.
One.
They are two words conjoined to be one.
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.
"After school" is typically written as two words.