Minimal Pairs final /k/ and /g/
back and bag
This page uses the symbols of the Phonemic Chart. You can listen to the symbols here.
Below are lists of words that vary only by one ending with the sound /k/ and the other ending with the sound /g/. You can use this to practise the sounds or as a list of words to be careful to pronounce properly.
The difference between /k/ and /g/ is often described as the latter being voiced while the former just uses a release of air (with the mouth position the same). But particularly at the end of words it can be more useful to concentrate on releasing more air with /k/.