buyers' market vs soft market

buyers' market and soft market both are nouns.

Word	Noun	Adjective	Verb	Adverb
buyers' market	Yes	No	No	No
soft market	Yes	No	No	No

As nouns, buyers' market and soft market are synonyms defined as:

buyers' market and soft market: a market in which more people want to sell than want to buy

Other synonyms of buyers' market include buyer's market.

buyers' market (noun)	soft market (noun)
a market in which more people want to sell than want to buy	a market in which more people want to sell than want to buy