膨大【ぼうだい】
huge, vast, enormous, colossal, extensive, large, swelling, expansion
膨れる【ふくれる】
to swell (out), to expand, to be inflated, to distend, to bulge, to get cross, to get sulky, to pout
膨張【ぼうちょう】
expansion, swelling, increase, growth
膨らむ【ふくらむ】
to expand, to swell (out), to get big, to become inflated
膨らます【ふくらます】
to swell, to expand, to inflate, to bulge