This is the 20th most frequent German word.
wie
"Wie" means "how," "as," or "like," depending on context.
'Wie' is used as an interrogative to ask 'How'.
Wie alt bist du?
How old are you?
'Wie' is used in a comparative sense meaning 'as' to draw a comparison.
Er arbeitet genauso schnell wie sie.
He works just as fast as she does.
'Wie' is used to introduce a subordinate clause meaning 'how'.