hydroponics vs tank farming

hydroponics and tank farming both are nouns.

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

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

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

Other synonyms of hydroponics include aquiculture.

hydroponics (noun)	tank farming (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