You didn't say which definition of the word you wanted to use, so this may not be correct.
Her interest in music was obvious.
The interest on the loan was too high.
Let me try to interest you in a nice example sentence.
A new environmental policy was introduced to address public interest regarding climate change.
This new type of bank account has compound interest.
I have a weird interest in exploration
you can use a compound sentence when i say so (by joe)
The program kindled his interest in antiquarian books.
The committee has approved our proposal, so now we can present it before their interest group.
His interest was in photography but he could not pursue. it. It is an example of interest word sentence.
The girl disobliged the boys wishes, she had no interest for what he had to say to her
A cell nucleus is of interest to many scientists.
The Hebrew civilization is of interest to many scholars.
If you're being investigated, you have a conflict of interest if they make you part of the investigating team.
Ive including a picture of the carom board i use, in case you were interest