This is the 904th most frequent Chinese word.
电话
Telephone.
The word '电话' is used as the object of the verb '打', together meaning 'making a phone call'.
我正在打电话给我的朋友。
I am making a phone call to my friend.
Here, '电话' is used to refer to a telephone device itself.
他的电话坏了，需要修理。
His phone is broken and needs repair.
In this sentence, '电话' is part of the phrase '联系电话', meaning 'contact phone number'.