11-Letter Words Ending in RMS

There are 20 11-letter words that end in RMS. 7 are common words, such as ANGIOSPERMS and BRAINSTORMS. A rarer one is THREADWORMS. In this set, O is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 20

angiospermsbrainstormschloroformsechinodermsgymnospermsoutperformsschoolmarmsblastodermscankerwormscaddiswormsdisconfirmshomeothermsletterformsnonconformsoverinformspalmerwormsphellodermsstenothermsthermoformsthreadworms

About this list

Words
20 (7 common words)
Common example
angiosperms
Rare example
threadworms
Doubled letters
4
Ending in S
20
Most frequent letter
O (20)

Questions

How many 11-letter words ending in rms are there?

20. 7 of them are common words.

What is a common example?

ANGIOSPERMS is among the common words in this set.