Should my other major heading be “Employment” or “Experience?”

Should my other major heading be “Employment” or “Experience?”

Both a different. Experience can be volunteer or non volunteer
If in case you were paid then heading should be employment ( if are are going to mention both volunteer and non volunteer) and other can be mentioned under heading of other experience.
If in case you are only talking about campus experience, then you can mention that under extra curricular and normal experience can be mentioned under heading of experience