What is a synonym for diary?

Here are some synonyms for diary, depending on the specific context:

Formal:

* Journal

* Logbook

* Memoir (if it's more about personal reflections)

Informal:

* Notebook

* Personal journal

* Daybook

* Keepsake

More specific:

* Travel journal

* Dream journal

* Food diary

* Bullet journal

The best synonym will depend on the specific kind of diary you are referring to.