• 蚕かいこ — silkworm
• 蚕業さんぎょう — sericulture industry
• 養蚕ようさん — silkworm farming
• 蚕糸さんし — silk thread
• 蚕豆そらまめ — broad bean (lit. “silkworm bean”)

蚕 combines the insect radical 虫 with the top element 天-like shape, and historically points to the culturally important silkworm. It appears widely in words tied to silk making and agriculture.