Why is "lens" singular and "lenses" plural? Why isn't "lens" the plural of "len"?

@Crazychick well, i’m only beginning to realize your difficulty with basic understanding. i shall keep that in mind in future.

@pentacorn I'm beginning to see what you meant now, but it was the way you phrased it. That can make a world of difference to whether people understand it or not.

@Crazychick it’s unfortunate my phrasing caused you difficulty. please do have a nice day.

@Degbeme Yes, but those don't look like plurals. It must be a different type of "s". Lol :)

@Crazychick

@redredred Why don't "deer" and "sheep" add an "s" for plural?

Unlike sixty percent of English, those words are Anglo Saxon in origin and are irregular like one ox or two oxen or one loaf and two loaves, leaf/leaves, man/men, woman/women and lots, lots more@Crazychick

@JohnOinger Yeah I might. :)

@Crazychick Nice

@JohnOinger He is good looking for 63.

@JohnOinger I'm not sure he's my type. Again, he might be OK as a friend.

@PrivateHell I don't know. "Jean" is a word, I'm sure it's acceptable in a game of Scrabble.

@JohnOinger He'd be OK as a friend, but he's only about a year older than me. If he was 20 years older maybe I'd do him. BTW what has he gotta do with lenses?

@DunningKruger Because English what?

@Catzgano As in Henry?

@FrogManSometimesLooksBothWays Goodbye, anti-British troll.