“Than” is a conjunction that is used to compare two ideas. Example: she is taller than her sister. “Then” is used in reference to time. Example: she went home and then went ahead to sleep.

'Than' is comparative: I like potatoes more *than* grass. I go out more now *than* when I wasn't vaccinated. 'Then' is an conditional or temporal adverb: I mowed the lawn *then* went for a run. If this, *then* that. Back *then*, I was living in Minneapolis.

Hi Aleksandra! Then is used when you're talking about something thst is related to time Than is used when comparing things.