Having practiced armchair linguistics for some years I should be able to sum up the difference off the top of my head, yet often I don’t know which term to use.
And looking them up on Wikipedia doesn’t help a lot…
Wikipedia on phonology:
Phonology is, broadly speaking, the subdiscipline of linguistics concerned with “the sounds of language”.
Wikipedia on phonetics:
Phonetics is a branch of linguistics that comprises the study of the sounds of human speech.
Can it be that the difference is that phonology deals with language sounds and phonetics deals with human speech sounds? And if so, well what does that mean?