https://taigi.fhl.net/dict/gm.php?fn=A/A0201.png
The standard Japanese word for **“trap”** is:
* **罠（わな, *wana*）** = a general trap (animal trap, trick, ambush,
metaphorical trap)
“**otoshi**” by itself is **not normally used alone** to mean “trap.” It
is only part of compounds, such as:
* **落とし穴（おとしあな, *otoshiana*）** = “pitfall trap”
* literally “falling hole”
So:
* **wana (罠)** = the general word for “trap”
* **otoshi (落とし…)** = only used in compound words like “pitfall,” not a
standalone word for “trap”
If you meant “trap” in the sense of deception or trick, **罠（wana）** is
the correct choice.