liquid vs tuberculin

liquid and tuberculin both are nouns.

Word	Noun	Adjective	Verb	Adverb
liquid	Yes	Yes	No	No
tuberculin	Yes	No	No	No

As nouns, tuberculin is a hyponym of liquid; that is, tuberculin is a word with a more specific, narrower meaning than liquid:

liquid: fluid matter having no fixed shape but a fixed volume
tuberculin: a sterile liquid containing a purified protein derivative of the tuberculosis bacterium; used in the diagnosis of tuberculosis

Other hyponyms of liquid include artificial blood, elixir, H2O, water, extravasation, instillation, liquid crystal, spill.

liquid (noun)	tuberculin (noun)
a frictionless continuant that is not a nasal consonant (especially `l' and `r')	a sterile liquid containing a purified protein derivative of the tuberculosis bacterium; used in the diagnosis of tuberculosis
the state in which a substance exhibits a characteristic readiness to flow with little or no tendency to disperse and relatively high incompressibility
fluid matter having no fixed shape but a fixed volume
a substance that is liquid at room temperature and pressure

liquid (adjective)	tuberculin (adjective)
existing as or having characteristics of a liquid; especially tending to flow
changed from a solid to a liquid state
clear and bright
in cash or easily convertible to cash
smooth and unconstrained in movement
smooth and flowing in quality; entirely free of harshness
filled or brimming with tears