Obligated:
* Meaning: Bound by a moral or legal duty to do something.
* Example: "I felt obligated to help my neighbor after the storm."
* Synonyms: Bound, required, compelled.
Ligated:
* Meaning: Tied or bound, typically with a ligature (a material used for tying).
* Example: "The surgeon ligated the blood vessel to stop the bleeding."
* Synonyms: Tied, bound, secured.
Let me know if you have any other words you'd like defined!