蟻塚

1. Origins, structure, and basic meaning

• Structure: 蟻塚 is read as ありづか and is a noun for an anthill, a mound-like nest built by ants from soil or similar material.
• Basic usage: Finding an anthill appears in 大きな蟻塚を見つける, while its inner structure appears in 蟻塚の内部.

2. Common pitfalls and similar expressions

• Exterior and interior
  • It can refer not only to the mound above ground but also to the connected internal structure of the ants' nest.
• Difference from 巣
  • 巣 broadly means the nest or home of a bird, insect, or animal, while 蟻塚 specifically identifies a mound-shaped ant nest.