An infix is a morpheme that is inserted inside a word.

Morphological analysis is the process of breaking down a sentence into morphemes.

It's difficult to remember new words.

The interior of this house is very spacious.

A circumfix is a morpheme that creates a new meaning by attaching to the front and back of a word.

Data insertion must be done accurately.

He inserted the USB into the computer.

I decided to quit my new job.

Please refrain from going out because a typhoon is approaching.

My keys are inside the house.