If you call something, you say it in a loud voice, usually because you are trying to attract someone's attention.
‘Edward!’ she called. ‘Edward! Lunch is ready!’
I could hear a voice calling my name.
‘Here’s your drink,' Bob called to him.
If you call a person or place, you telephone them.
Call me when you get home.
Greta called the office and complained.
When you use call like this, it is not followed by ‘to’. Don't say, for example, ‘I called to him at his London home’. You say `I called him at his London home.
If someone calls on you, or if they call, they make a short visit in order to see you or deliver something.
He had called on Stephen at his London home.
The nurse calls at about 7 o'clock every morning.
Call is not used like this without on in American English.
If you call someone or something a particular name, you give them that name, or you address them by that name.
We decided to call our daughter Hannah.
‘Pleased to meet you, Mr. Anderson.’ – ‘Please call me Mike.’
If you call someone or something a particular thing, you say they are that thing. You use call followed by a noun phrase, followed by an adjective or another noun phrase. You often use this construction when you are describing someone or something in a negative way.
He called the report unfair.
They called him a traitor.
Don't use ‘as’ with call. Don't say, for example, ‘We decided to call our daughter as Hannah’ or ‘They called him as a traitor’.