Use load for almost everything: goods being carried, a weapon being filled, a page loading, or a burden someone carries. Use lode only for a vein of ore in mining, or figuratively for a rich source of something, as in a lode of unpublished letters. If in doubt, load is almost certainly the word you want.
The core difference
Load is the everyday word for cargo, weight or data; lode is a mining term for a mineral vein.
- load — to put goods onto something, or the amount carried: They loaded the boxes onto the truck.
- load — to fill a weapon, or for a page or file to open: Wait for the page to fully load before clicking anything.
- lode — a vein of metal-bearing ore, or a rich source of something: The mine was built around a rich silver lode.
How to tell them apart
The two words are doublets, meaning they both trace back to the same Old English root, lād, meaning "way, course, journey". Lode kept that old sense as a mining term, still visible in words like lodestone and lodestar, while load branched off to mean a burden. A simple trick: lode almost always sits next to a mining word, such as ore, vein, silver or gold.
The mix-up mainly appears in figurative writing, where someone reaching for lode of unpublished letters or lode of information types load instead, since load is by far the more familiar word in everyday use.
