comfort vs tranquillise

comfort is a noun but tranquillise is not a noun.

Word	Noun	Adjective	Verb	Adverb
comfort	Yes	No	Yes	No
tranquillise	No	No	Yes	No

As verbs, tranquillise is a hyponym of comfort; that is, tranquillise is a word with a more specific, narrower meaning than comfort:

Other hyponyms of comfort include calm, calm down, lull, quiet, quieten, still, tranquilize, tranquillize, allay, ease, relieve, still.

comfort (noun)	tranquillise (noun)
the act of consoling; giving relief in affliction
assistance, such as that provided to an enemy or to a known criminal
bedding made of two layers of cloth filled with stuffing and stitched together
a feeling of freedom from worry or disappointment
a state of being relaxed and feeling no pain
a freedom from financial difficulty that promotes a comfortable state
satisfaction or physical well-being provided by a person or thing

comfort (verb)	tranquillise (verb)
lessen pain or discomfort; alleviate	cause to be calm or quiet as by administering a sedative to
give moral or emotional strength to	make calm or still