drip vs trickle

drip and trickle both are nouns.

Word	Noun	Adjective	Verb	Adverb
drip	Yes	No	Yes	No
trickle	Yes	No	Yes	No

As nouns, drip and trickle are synonyms defined as:

drip and trickle: flowing in drops; the formation and falling of drops of liquid

Other synonyms of drip include dribble.

drip (noun)	trickle (noun)
(architecture) a projection from a cornice or sill designed to protect the area below from rainwater (as over a window or doorway)	flowing in drops; the formation and falling of drops of liquid
flowing in drops; the formation and falling of drops of liquid
the sound of a liquid falling drop by drop

drip (verb)	trickle (verb)
let or cause to fall in drops	run or flow slowly, as in drops or in an unsteady stream
fall in drops