"A while" is an noun and "awhile" is an adverb. It sounds confusing but you already know the difference.

I’m often astounded by the way people use “awhile” and “a while.” And, no, I’m not shocked by how badly they choose between these terms, but by how well. To understand when “a while” is preferable to ...

A phrase is a group of two or more words that does not contain a subject and a verb working together. There are many types of phrases, including verb phrases, adverb phrases, and adjective phrases.

'I just didn’t see them. I drove through the traffic lights when they were red.' 'He wasn’t tall enough and couldn’t climb over the fence.' In these two examples, through and over are prepositions and ...

Co-ordinating units of writing must all be of the same grammatical kind. This is what is referred to as preserving parallel structure. For instance, nouns must match with nouns, adjectives with ...

In these examples, down and back are not prepositions but function as adverbs to extend or change the meaning of the verb. This combination of verb and adverb is always known as a phrasal verb. Note ...