A it seems when I learn English I will get stuck by these variants in pronunciation.
Thanks after all.
In the case of "civilization"/"civilisation," there is the further complication of a difference between British and American usage.
The ending "-isation," "-ization" in British English tends to be pronounced beginning with the diphthong /a
I/ while in American English "-ization" (I can't say if any American words end in "-isation") tends to be pronounced beginning with the simple vowel /
I/ or with a schwa.
There are other cases where /a
I/ instead of /
I/ or a schwa appears more often in BE than in AE: Certain Latin-derived words ending in "-ile," for example, "mobile" (in the sense of "capable of being moved, capable of moving") and "missile."