D - 29 combinations
159. dam = beaver + house, beaver + lake, beaver + river, beaver + stream, beaver + tree, beaver + water, river + wall, stream + wall
160. darkness = air + night, air + twilight
161. dawn = day + night, night + time
162. day = dawn + time, night + sun, sky + sun, sun + time
163. death = alchemist + corpse, alchemist + grave, alchemist + graveyard, alchemist + skeleton, bacteria + time, life + time
164. desert = sand + sand, cactus + sand, land + sand, lizard + sand, sand + vulture
165. dew = dawn + fog, dawn + grass, dawn + plant, dawn + tree, dawn + water, fog + grass, fog + plant, fog + tree, grass + water
166. diamond = coal + pressure
167. dinosaur = big + lizard, lizard + time
168. diver = human + scuba tank, lake + scuba tank, ocean + scuba tank, scuba tank + sea, scuba tank + swimmer
169. doctor = hospital + human, human + stethoscope
170. dog = barn + wolf, bone + wolf, campfire + wolf, domestication + wolf, farm + wolf, farmer + wolf, field + wolf
171. doge = computer + dog, dog + internet
172. doghouse = container + dog, container + husky, dog + house, dog + wall, house + husky, husky + wall
173. domestication = animal + farmer, animal + human, animal + scientist, farmer + scientist
174. don quixote = hero + windmill, knight + windmill, legend + windmill, story + windmill
175. donut = cookie dough + oil, cookie dough + wheel, dough + oil, dough + wheel
176. double rainbow = rainbow + rainbow
177. dough = flour + puddle, flour + rain, flour + water
178. dragon = air + lizard, airplane + lizard, fire + lizard, legend + lizard, lizard + sky, lizard + story
179. drone = airplane + robot, helicopter + robot, paper airplane + robot, robot + seaplane
180. drum = fabric + wood, leather + wood, music + wood
181. drunk = alcohol + human, beer + human, human + wine
182. dry ice = carbon dioxide + cold, carbon dioxide + ice
183. duck = big + duckling, bird + lake, bird + pond, bird + water, chicken + lake, chicken + pond, chicken + water, duckling + time, lake + owl, lake + pigeon, owl + pond, owl + water, pigeon + pond, pigeon + water
184. duckling = duck + egg
185. dune = beach + wind, desert + sand, desert + sandstorm, desert + wind, sand + wind
186. dust = air + earth, air + land, air + soil
187. dynamite = container + gunpowder, gunpowder + pipe, gunpowder + wire