As nouns the difference between treks and trews
is that treks is plural of lang=en while trews is trousers, especially if close fitting and tartan.
As a verb treks
is third-person singular of trek.
treks
English
Noun
(head)
Verb
(head)
(trek)
trews
English
Noun
(-)
(British) trousers, especially if close fitting and tartan.