As nouns the difference between abay and lagoon
is that abay is (obsolete) barking or baying of dogs at their prey [ while lagoon is a shallow body of water separated from deeper sea by a bar. ]
abay
English
Noun
(
en noun)
(obsolete) Barking or baying of dogs at their prey. [ ]
References
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lagoon
Noun
(
en noun)
A shallow body of water separated from deeper sea by a bar.