To Be Useful
To Be Of Use, To Be Helpful, To Be Of Service
godan verb
やくにたつ
役に立つ To Be Useful, To Be Of Use, To Be Helpful, To Be Of Service
役立つ To Be Useful, To Be Of Use, To Be Helpful, To Be Of Service
It has to be in this order with 立つ at the end because 役 is a noun and not a verb!