I agree re: “rare” v “obscure”. “Obscure” to me means weird (in a negative way) in addition to uncommon. “Rare” just means uncommon. Diamonds (non-synthesized) are valued highly because they’re seen as rare, for example. People don’t use the word “obscure” to describe diamonds.
That said, neither word may turn out to be good to use in advertising.
I agree re: “rare” v “obscure”. “Obscure” to me means weird (in a negative way) in addition to uncommon. “Rare” just means uncommon. Diamonds (non-synthesized) are valued highly because they’re seen as rare, for example. People don’t use the word “obscure” to describe diamonds.
That said, neither word may turn out to be good to use in advertising.