Here are examples of the word/phrase "conventional" used in a sentence and paraphrased in a sentence...
Where I'm from, it is conventional to leave your shoes at the door.
Where I'm from, it is customary to leave your shoes at the door.
It's conventional for a lot of programmers to use camel case when creating variable names.
It's customary for a lot of programmers to use camel case when creating variable names.
Conventional code is a lot easier to read and modify.
Customary code is a lot easier to read and modify.
Other Examples...