But this can lead to inconsistencies and a failure to identify some areas as being linguistically sensitive, where they should be identified as such, or vice versa.
Ond mae hyn yn gallu arwain at anghysondebau a methiant i weld fod rhai ardaloedd yn ieithyddol sensitif, ble y dylen nhw fod wedi cael eu cydnabod felly, neu vice versa.