noun
ponds and swamps
Refers to bodies of water such as ponds and marshes collectively. Not a common everyday word; more likely to appear in descriptive or literary contexts.
この地域には多くの池沼が点在している。
Many ponds and swamps are scattered throughout this area.
noun
retard; mentally disabled person
Internet slang, derogatory. A homophone of 知障 (intellectual disability), used as a slur. Strongly offensive; not for polite use.
See also: 知障
ネットで「池沼」と書くのは差別用語だからやめたほうがいい。
Writing '池沼' online is a discriminatory term, so you should stop.