The difference is in security, rate, and responsibility.
Temp hourly wage (temp work)
You receive a gross hourly wage via an employer.
Taxes and contributions are automatically deducted.
You build up holiday pay and have more social security.
The hourly wage is often lower than a freelance rate, but offers more security.
Freelance hourly rate
You set your own hourly rate, which is usually higher.
You’re responsible for tax and financial risks yourself.
Via YoungOnes you’re insured during your gig with ONSI (such as liability).
Your invoice is automatically generated for you.
In short: with temp work you choose more security, with freelance you choose more freedom and a higher rate, with more personal responsibility.