Q: whats the diffdrence between that and a sus2, stuff like that.
A: Csus4 means C, F, G. and Csus2 means C, D, G... so 'sus' is just a little trick that swaps the 3 out for a 4 or 2. if it doesn't say 4 or 2 then it means 4. so if you see "Csus" on paper that's gonna mean Csus4.