But all the ones above 30% are not too hard (besides myriad and triad)
I misread proper noun, I thought you meant, is it properly a noun? But no, no proper noun, it is not a person's name. Same like lion is not a proper noun (but Leo is, or can be anyway)
But there is no way I would have gotten elegy, carob, gentler and prosody. No idea what they mean... Only other two I missed were strategy and scrub. I really should have gotten strategy..