burden

1. burden (noun) — sense 1

Definition: A heavy load.

Example: I know that this was Life,—the track
⁠Whereon with equal feet we fared;
⁠And then, as now, the day prepared
The daily burden for the back.

2. burden (noun) — sense 2

Definition: A responsibility, onus.

3. burden (noun) — sense 3

Definition: A cause of worry; that which is grievous, wearisome, or oppressive.

Example: c. 1710-1730, Jonathan Swift, The Dean's Complaint Translated and Answered
Deaf, giddy, helpless, left alone, / To all my friends a burden grown.

4. burden (verb) — sense 1

Definition: To encumber with a burden.

Example: to burden a nation with taxes

5. burden (verb) — sense 2

Definition: To impose, as a load or burden; to lay or place as a burden (something heavy or objectionable).

Example: He was beginning to forget his burdening, despairing mood of a short while ago.