Meaning:1. to obsessively think or worry about something. 2. to inhabit a particular place or surface.
In his speech, he dwelt on the plight of the sick and the hungry.
I want to become a scientist and study the creatures that dwell upon other planets.
That type of animal dwells exclusively on land.
Meaning: 1. to deviate from what is good or expected. 2. to become lost.
I'm afraid your son has gone astray and gotten into a bit of trouble.
A: "It seems my coat has gone astray."
B: "Hmm, maybe someone picked it up by mistake."
My life goals just kind of went astray for a time in my twenties, but I've got back on track.
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