貝塚 (かいづか)shell heap; shell mound; kitchen midden

貝塚, its kanji, and other words that share them.Open this graph

Kanji in 貝塚

貝かいshellfish
巻き貝まきがいsnail; spiral shell
貝殻かいがらseashell; shell
からす貝からすがいcockscomb pearl mussel (Cristaria plicata)
くも貝くもがいspider conch (Lambis lambis)
さくら貝さくらがいNitidotellina nitidula (species of tellin)
しゃこ貝しゃこがいgiant clam (any clam of subfamily Tridacnidae)
つぶ貝ツブがいwhelk (esp. Neptunea and Buccinum spp.)
塚つかmound; heap
一里塚いちりづかmilestone (1 ri apart)
あり塚ありづかanthill
もぐら塚もぐらづかmolehill; mole mound
アリ塚ありづかanthill
モグラ塚もぐらづかmolehill; mole mound
三里塚闘争さんりづかとうそうSanrizuka Struggle; campaign against the construction of Narita airport
丸塚まるづかround burial mound

See how 貝塚 connects to the rest of Japanese.