Evergreen content
Content that stays relevant and useful long after it's published, rather than expiring with a news cycle or trend.
Evergreen content is material whose value doesn't decay — how-tos, definitions, foundational advice — as opposed to timely posts tied to a trend, launch or moment. A good explainer is just as useful a year from now as it was on the day it went out.
Because it doesn't expire, evergreen content is the raw material for content repurposing: one durable piece can be resliced into posts for months. It also anchors a content pillar, giving you a reliable well to draw from when the calendar gets thin.