Ah, but they are pronounced differently and this helps me to keep the two concepts appart.
Your own ECC application "Customer Tables" for debtors (KNA1 etc) are a crispy English "C". Phonetically: "Cööstöömöör".
The SU25 "Customer Tables" for your own proposals (USOBT_C etc) were developed by a german basis programmer in Walldorf who sees the world outside SU22 as his customer, so it is a heavier "K", as in "Kuhfladen" or "Kraichgau". Phonetically: "Kaastaamaa".
I would not worry about it to much... :-)
Cheers,
Julius