Feet is the plural form of the word foot, which is the appendage at the end of a leg which people or animals walk upon. Foot and feet are also used to mean the lowest part or parts of an item, or measurements of twelve inches. Changing the vowel in a word to pluralize it is called umlaut, it was common practice in Old English and survives in the words foot and feet.
A feat is an achievement that requires enormous skill, bravery, imagination or brawn. Feat describes an accomplishment that is above and beyond, extraordinary, remarkable or noteworthy.
Examples
Dozens of water rescues played out in the Houston area overnight Sunday after a powerful line of thunderstorms unleashed as much as two feet of rain, forcing much of the city to tread water. (The New York Times)
For many people, feet are about as attractive as a pair of old trainers, which might explain why they’re so often neglected when it comes to personal health. (The National)
A refugee child prostrated herself at the Pope’s feet on Saturday, begging him to help her family leave a detention centre on the Greek island of Lesbos. (The Independent)
While he struggled to walk when he eventually got back to his feet after the Scott collision, even he admits he didn’t expect the injury suffered at training to be as serious as it was. (The Sydney Morning Herald)
A day after SpaceX pulled off an upright landing of its powerful Falcon 9 rocket, the head of France’s space agency called it a “technological feat” but warned of more work ahead. (The Japan Times)
“In fact, Grand Bahama is on pace to get more than 1,000,000 visitors to its shores by year’s end, which is a feat that has not been realized since 1991.” (The Freeport News)