liquid vs extravasation

liquid and extravasation both are nouns.

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

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

liquid: fluid matter having no fixed shape but a fixed volume
extravasation: an extravasated liquid (blood or lymph or urine); the product of extravasation

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

liquid (noun)	extravasation (noun)
a frictionless continuant that is not a nasal consonant (especially `l' and `r')	the process of exuding or passing out of a vessel into surrounding tissues; said of blood or lymph or urine
the state in which a substance exhibits a characteristic readiness to flow with little or no tendency to disperse and relatively high incompressibility	(of volcanoes) pouring out fumes or lava (or a deposit so formed)
fluid matter having no fixed shape but a fixed volume	an extravasated liquid (blood or lymph or urine); the product of extravasation
a substance that is liquid at room temperature and pressure

liquid (adjective)	extravasation (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