沈菜[kimuchi] kimchi
意気銷沈[ikishouchin] depressed in spirits
遠沈[enchin] sediment
泣沈む[nakishizumu] to abandon oneself to grief
撃沈[gekichin] sending a ship to the bottom

沈む[shizumu] to sink
沈める[shizumeru] to sink
沈下[chinka] sinking
沈降[chinkou] precipitate
沈思[chinshi] contemplation

沈渣[chinsa] sediment
残渣[zansa] residue

尿沈渣[nyouchinsa] urinary sediment (e.g. in urinalysis)