How to list an activity that you were paid for but isn't necessarily a job?

Two years ago I was a counselor for a week long sleep away camp for adults with mental and intellectual disabilities. When the week ended I got wind that they used to pay the counselors with whatever money they had leftover at the end of the week (ranging anywhere from $25 to $100) but they were not paying us this year as funds were extremely low. I honestly didn’t care one bit as I went into it thinking it was volunteer work anyhow and I certainly wasn’t in it for the money. Fast forward the next year and I returned as a counselor, but at the end of this week I was handed a check for $75. Now I’m filling out college applications and I’m not sure how to list this activity. It doesn’t feel right listing it as community service because the second year I was paid, but I still wouldn’t consider it a job — it was only one week out of the year and there wasn’t an “hourly wage.”

Anyway, how should I list this on my college application?

Perhaps the first year can be considered service and the second year was employment. But instead of listing it in two different sections, I would pick one and put it there. “Counselor, week-long camp for adults with disabilities, 2015 and 2014.”