dealings vs downtick

dealings and downtick both are nouns.

Word	Noun	Adjective	Verb	Adverb
dealings	Yes	No	No	No
downtick	Yes	No	No	No

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

dealings: the act of transacting within or between groups (as carrying on commercial activities)
downtick: a transaction in the stock market at a price below the price of the preceding transaction

dealings (noun)	downtick (noun)
the act of transacting within or between groups (as carrying on commercial activities)	a transaction in the stock market at a price below the price of the preceding transaction
social or verbal interchange (usually followed by `with')
mutual dealings or connections or communications among persons or groups