- 感染【かんせん】 - infection, contagion, becoming infected, being infected (e.g. with harmful ideas), being influenced (by) 
- 汚染【おせん】 - pollution, contamination 
- 染める【そめる】 - to dye, to colour, to color 
- 感染症【かんせんしょう】 - infectious disease, infection 
- 染まる【そまる】 - to be dyed, to be tainted, to be infected, to be stained, to be steeped 
- 染色【せんしょく】 - dyeing, staining, dyed colour (color) 
- 染みる【しみる】 - to pierce, to penetrate, to soak in, to permeate, to sting (wound or sensitive area, etc.), to smart, to twinge, to be infected (with vice), to be steeped (with prejudice), to be influenced, to feel keenly, to make a deep impression 
- 染み【しみ】 - stain, spot, smudge, blot, smear, blotch, spot (on one's skin, e.g. chloasma, liver spot), blemish, discoloration, freckle 
- 染色体【せんしょくたい】 - chromosome 
- 染め【そめ】 - dyeing, printing 
- 染料【せんりょう】 - dyes 
- 染織【せんしょく】 - dyeing and weaving 
- 染まり具合【そまりぐあい】 - effect of dyeing 
- 染み込む【しみこむ】 - to soak into, to sink into, to seep into, to permeate, to sink into (one's mind), to be (deeply) ingrained, to be instilled, to be embedded, to be impressed