Understanding How to Name a Table

I'm a beginner in SQL.

I'm thinking of developing a household account book app at home to study, but I can't decide the name of the table.

Specifically, I am worried about XXX below.
"Monthly_expense" is mentioned as a candidate, but
It doesn't fit me well, so please give me some advice.

■ Table name
1.XXX—Table that manages annual expense information
■ Column name
ID id
Year_month
Category catg_id
Category name catg_name
Name
Quantity item_num
Price

■ Table name
2.catg_master —Table for managing expense categories
■ Column name
Category ID catg_id
Category Name catg_name

Dear Kabichan,

Thank you for pointing it out.
I have corrected it as follows.
The correction part is ○ and the deletion part is x.

■ Table name
○1.expense: Table for managing expenditure information by year
■ Column name
ID id
○ Date of expenditure: expense_date
Category catg_id
x Category name catg_name
Name
Quantity item_num
Price

■ Table name
2.catg_master —Table for managing expense categories
■ Column name
Category ID catg_id
Category Name catg_name