i'll be using APU for the time being, if only for the specificity. Until all cpu's being sold contain a gpu as well, it is worth differentiating with a different term.
Once expectations of parallel vector function in a cpu are default, we can go back to just cpu.
or split the difference:
apu vs cpu = bpu aBc
cpu vs gpu = epu cdEfg
Do you refer to Sandy Bridge chips as APU's? What about Clarkdale?