snuff vs jot

snuff and jot both are nouns.

Word	Noun	Adjective	Verb	Adverb
snuff	Yes	Yes	Yes	No
jot	Yes	No	Yes	No

As nouns, jot is a hypernym of snuff; that is, jot is a word with a broader meaning than snuff:

Other hypernyms of snuff include hint, mite, pinch, soupcon, speck, tinge, touch.

snuff (noun)	jot (noun)
sensing an odor by inhaling through the nose	a brief (and hurriedly handwritten) note
finely powdered tobacco for sniffing up the nose	a slight but appreciable amount
a pinch of smokeless tobacco inhaled at a single time
the charred portion of a candlewick

snuff (adjective)	jot (adjective)
snuff colored; of a greyish to yellowish brown

snuff (verb)	jot (verb)
inhale (something) through the nose	write briefly or hurriedly; write a short note of
sniff or smell inquiringly