Is money at a funeral called a memorial donation?

Memorial donations would be acceptable. Often, a funeral service sheet may have noted on the back the following:

"In Lieu of flowers, donations are in favour of the Cancer Society and may be handed to the funeral director, or sent in care of Whispering Glade Funeral Home, 299 Broken Axel Road, Durango Colorado 68104"

Alternatively, the Word 'honorarium' may be considered.

"As all of you know, Howard preferred that he receive his flowers while he was living. In this light, any honorariums you wish to make, may be made in favour of the Society for the Blind, and may be handed to the funeral director as you leave, or alternatively, posted in Care of: Oi Vey Go Away Funeral Home, 495 Kalamutneh Avenue, Hanukkah Heights, NY 10048"