different between gluggy vs sluggy

English

glug +? -y

gluggy (comparative gluggier, superlative gluggiest)

(informal) Liquid and viscous; moving slowly when poured.
The jelly was not yet set, but quite gluggy.
(informal) Lazy or sluggish.
The morning after the party I felt gluggy.

slug +? -y

sluggy (comparative more sluggy, superlative most sluggy)

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