What part of speech is burden?

"Burden" can be several parts of speech depending on how it's used in a sentence:

* Noun: This is the most common usage, referring to something that weighs down or causes stress.

* Example: "The heavy backpack was a burden on her shoulders."

* Verb: This usage means to load or weigh down.

* Example: "The heavy suitcase burdened the traveler."

* Adjective: This is less common, but it can be used to describe something that is burdensome.

* Example: "The burdening weight of responsibility."

So, without a sentence, it's difficult to definitively say which part of speech "burden" is.