Cases of word usage

1) (a part or total) loss of memory (amnesia)

2) to keep or honour the memory of (a person, event) (commemorate)

3) to fail to keep (something) in the memory (forget)

4) (Latin) (used in epitaphs etc) in memory of; as a memorial to (in memorium)

5) (Latin) (used in epitaphs etc) in memory of; as a memorial to (in memory)

6) something kept in memory of the giver (keepsake)

7) a small error in speech, behaviour, memory etc; a gradual passing (of time) (lapse)

8) a building, column, statue etc in memory of a person or event; a very old and interesting building (monument)

9) to continue to be a painful or annoying memory (rankle)

10) ROM; a specific type of memory in computers (read-only memory)