Are you asking about machine applique or machine embroidery applique? There is a difference.

A machine embroidery design will(should) state if it is an (in-the-hoop)applique design, in the description. If not, the photo of the finished product will make it obvious. Any properly digitized machine embroidery applique design will have the initial placement line stitched out, then the second line that tacks the fabric down before coming back to secure the fabric with the decorative edge stitching.

The word you use when searching for a machine embroidery applique design would be 'applique.'