Only

The word only has many uses.
If only people would put 'only' in the right place.

Only in America
Book title and common phrase or catchphrase.

An only child
I am an only child. I have no brothers nor sisters. I am the only one. I admit I am sometimes 'lonely only'.

The word only also has many misuses.

"I only go shopping at weekends.' Does the word only apply to the shopping or the weekends? You might have said:
I go shopping only at weekends.
At weekends I do shopping only, nothing else.

Only read my rules on grammar, and I shall be happy.