Boardwalk rhymes with:
sidewalk, jaywalk, kowalke, norwalk, sidewalk, sleepwalk, airlock, blackhawk, cornstalk, echohawk, gamecock, goshawk, honestok, jaywalk, kowalke, marschalk, mohawk, nighthawk, norwalk, poppycock, seahawk, sidewalk, skyhawk, sleepwalk, smalltalk, tomahawk, witbrock
Boardwalk sounds like:
bartels, bartles, bartolucci, bertels, bertolucci, birdlike, birtley's, boardwalks, bradlees, bradley's, bradleys, breathless, brothels, brutalize, brutalizes