Just that really . I recently applied for several jobs which had the above words in the job title. It seemed to be split about 50/50 in the job adverts as to which spelling they used.
I was confused as I really couldn't decide which was the correct spelling.
I then noticed that this word comes up a lot in captions on the news and again both spellings crop up.
Has anyone got a good dictionary ? Can anyone be a good advisor/adviser ?