As verbs the difference between shugging and chugging
is that shugging is present participle of lang=en while chugging is present participle of lang=en.
As a noun chugging is
the sound of something that chugs.
chugging
English
Verb
(head)
Noun
(
en noun)
The sound of something that chugs.
* 1997 , Helen Papanikolas, A Greek Odyssey in the American West (page 5)
- From the nearby rail yards came clangings, groanings, chuggings .