A currant is a fruit; current is everything else: something happening now, or a flow of water, air or electricity. If you can put it in a scone, it is a currant. If it is happening now or it flows, it is current.
The core difference
Currant names a small fruit, while current means happening now or a continuous flow.
- currant — a small dried grape, or the berry of a shrub such as the blackcurrant: She added a handful of currants to the scone mix.
- current — adjective meaning happening or existing right now: What is your current job title?
- current — noun meaning a continuous flow of water, air or electricity: Electric current flows through the wire.
How to tell them apart
Currant is only ever a fruit, or the shrub that bears it. Current has two jobs: an adjective for the present moment, and a noun for a flow. A useful trick is that current ends in -ent, like present and recent, which are also about now, while currant ends in -ant and names a tiny fruit, as small as an ant.
The mix-up shows up most in recipes and shopping lists, where people write current buns or red current jelly. Whenever the word names food, you want currant.