As nouns the difference between fjord and estuary
is that fjord is a long, narrow, deep inlet between cliffs while estuary is coastal water body where ocean tides and river water merge.
fjord
Alternative forms
* fiord (New Zealand)
Noun
(
en noun)
A long, narrow, deep inlet between cliffs.
estuary
English
Alternative forms
* (archaic)
Noun
(estuaries)
Coastal water body where ocean tides and river water merge.
An ocean inlet also fed by fresh river water.
Derived terms
* Estuary English