tank farming vs hydroponics

tank farming and hydroponics both are nouns.

Word	Noun	Adjective	Verb	Adverb
tank farming	Yes	No	No	No
hydroponics	Yes	No	No	No

As nouns, tank farming and hydroponics are synonyms defined as:

tank farming and hydroponics: a technique of growing plants (without soil) in water containing dissolved nutrients

Other synonyms of tank farming include aquiculture.

tank farming (noun)	hydroponics (noun)
a technique of growing plants (without soil) in water containing dissolved nutrients	a technique of growing plants (without soil) in water containing dissolved nutrients