As nouns the difference between delta and desert
is that
delta is the fourth letter of the modern Greek alphabet
Δ,
δ while
desert is (
deserved) That which is deserved or merited; a just punishment or reward.
As a proper noun Delta
is a CDP in Alabama.
As an acronym DELTA
is
Diploma in English Language Teaching to Adults, an advanced qualification to teach English, higher than the CELTA, accredited by the
University of Cambridge.
As an adjective desert is
abandoned, deserted, or uninhabited; usually of a place.
As a verb desert is
to leave (anything that depends on one's presence to survive, exist, or succeed), especially when contrary to a promise or obligation; to abandon; to forsake.