"suds" in the noun sense
1. soapsuds, suds, lather
the froth produced by soaps or detergents
a dysphemism for beer (especially for lager that effervesces)
"suds" in the verb sense
wash in suds
2. froth, spume, suds
make froth or foam and become bubbly
"The river foamed"
Source: WordNet® (An amazing lexical database of English)
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