General Synonyms:
* Tasks
* Duties
* Responsibilities
* Errands
* Housework
* Work
* To-dos
More Specific Synonyms:
* Household chores: Cleaning, tidying, laundry, dishes, cooking, yard work
* Work chores: Filing, data entry, answering phones, making appointments
* Farm chores: Milking cows, feeding animals, planting crops, harvesting
Informal Synonyms:
* Stuff
* Things
* Jobs
* Bits and bobs
* Stuff to do
The best synonym for "chores" will depend on the specific context and the desired tone of your writing.