As nouns the difference between suds and sud
is that suds is lather, foam while sud is a bubble of lather or foam (the singular of suds).
suds
English
Noun
(-)
lather, foam
Derived terms
* soapsuds
* suds up
sud
English
Noun
(
en noun)
(informal) A bubble of lather or foam (the singular of suds).
Derived terms
* soapsud
----