How to spell IMPROCE correctly?

When encountering the misspelling "improce", there are a few possible correct suggestions. It seems like the intended word could be "improve", referring to enhancing or making something better. Another option might be "improper", denoting something not in accordance with the accepted rules or standards.

• impose I don't want to impose, but can I borrow your pen?
• improper The improper use of equipment led to the accident.
• improve The new coat of paint will improve the appearance of the room.
• improves

Putrefication

• nitrification
• petrifaction
• purification
• putrefaction
• putrification
• vitrification