as
//æz//
Adverb
1
To the same extent or degree; equally (used in comparisons).
She is as tall as her brother.
Conjunction
1
While; during the time that.
She listened to music as she worked.
2
Because; since.
I went to bed early as I was tired.
3
In the way that; like.
Do as I say, not as I do.
4
Though; although.
Happy as I was, I still felt something was missing.
Preposition
1
In the role, capacity, or function of.
He works as a teacher.
2
In the manner of; like.
He works as a teacher.