In terms of what is said  - or the importance of it all, there is very, very little difference between a memorial and a funeral. Quite simply, a funeral service has the body present - pre-burial or cremation. A funeral service is often organised in a very short time frame, and there are some limitations to where it may be held. A memorial service has no body present. It can be held later, if desired, to allow the family time to get themselves mentally prepared, the service organised - and sometimes , simply due to the logistics of having everybody together at the same time. The rites and rituals are almost the same. The feel should be the same.