Blackwood rhymes with:
packwood, corkwood, lakewood, lockwood, markwood, oakwood, packwood, rickwood, rockwood, silkwood, teakwood
Blackwood sounds like:
balked, ballast, belched, bellsouth, belsito, bilked, biologist, blacked, blackest, blackett, blackheath, blackout, blast, blasted, blazed, bleached, bleakest, blessed, blest, blight, blighted, blissett, blixt, blockade, blockaded, blocked, blockhead, blowiest, bluest, blushed, blust, bolstad, bulged, bulkhead, bullshit