As nouns the difference between sandbar and lagoon
is that sandbar is a ridge of sand caused by the action of waves along a shore while lagoon is a shallow body of water separated from deeper sea by a bar.
sandbar
Alternative forms
* sand bar
Noun
(
en noun)
A ridge of sand caused by the action of waves along a shore.
lagoon
Noun
(
en noun)
A shallow body of water separated from deeper sea by a bar.