Recently I awakened as androidsyn so I'm gonna compare synpathy and echoflection cuz I've seen people getting confused about them since they're both about relating and stuff
Synpath:
I deeply relate to androids on multiple layers. It affects my identity and my humanity. I feel like I have programs like them, I feel like I percieve the world like they would and sometimes I even get phantom LED. It feels very similar to my theriotype, the only real difference being the fact that it doesn't feel right to call myself a literal android. That's why I say I identify with androids not as them
Echoflect:
I relate to Sunny and see myself in him but it doesn't affect my humanity and identity much. He's still very important to me but it impacts more how I see him than me. I use echoflection as a way to explore my experiences that I see in him, as a source of comfort and to signal others that I'm similar to him in some ways
Based off my experiences. I'm not saying this is the only right way to define those things, those are just exampes.