Fun fact an adder (snake) was once a nadder, and an apron was on a napron. This fun fact brought to you by The History of English Podcast.

Happily sourced in Wikipedia so I don't have to figure out which episode I learned that from:

https://en.wikipedia.org/wiki/Adder <- see below the table in Taxonomy.

And cherries were ceries from French, leading to the singular form cherry. Lots of neat little things like this.

	▲	Tagbert an hour ago \| parent [-]
		And peas was both singular and plural like fish. "I ate a single peas" "I ate many peas" People thought it was a mistake and generated "pea" for a new singular.