Many of today's grammar rules can be traced to the opinions of one 18th century writer.
Or both? Or neither?
Here's the lowdown on what may be the most confusing pair of words in the English language.
Editor Emily Brewster clarifies the difference.
Head, shoulders, metaphors, and toes
Our research turned up two archaic literal meanings
What our editors are looking for when they enter words in Merriam-Webster.