1. I called at his house.

2. I visited his house.
3. I called on one of my friends.
4. I dropped by the bank to make a savings deposit.
5. I dropped by the bank to make a savings account.
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Are they all grammatical? What about #4 and #5? Which one is right? Can we use both terms, savings deposit and savings accound? Do they have the same meaning?

All but 5 are correct, but 1 is not used much any more.

5 is not correct because a savings account is the money that's already i the bank. We make a deposit to the savings account.

Let's analyze each sentence to determine their grammaticality and meaning:

1. "I called at his house."
This sentence is grammatically correct and means that you made a phone call from their house.

2. "I visited his house."
This sentence is grammatically correct and means that you physically went to his house.

3. "I called on one of my friends."
This sentence is grammatically correct and means that you made a phone call to one of your friends.

4. "I dropped by the bank to make a savings deposit."
This sentence is grammatically correct and implies that you went to the bank to deposit money into your savings account.

5. "I dropped by the bank to make a savings account."
This sentence is not grammatically correct. Instead, you should say "I dropped by the bank to open a savings account."

Regarding your question about whether "savings deposit" and "savings account" have the same meaning, the answer is no.

A "savings deposit" refers specifically to the act of putting money into your existing savings account. It implies that you already have a savings account set up and are making a deposit into that account.

On the other hand, a "savings account" refers to the actual account where you deposit and save money. "Savings account" is the broader term that encompasses the entire account, while "savings deposit" is a specific action within that account.

To recap, based on the meanings:
- Sentence 4 is correct ("savings deposit" indicates depositing money into an existing savings account).
- Sentence 5 is incorrect ("savings account" should be used instead of "savings deposit" to open a new account).