10-Letter Words Matching __H__O____

There are 20 10-letter words that match __H__O____. 5 are common words, such as ECHINODERM and ETHOLOGIES. A rarer one is UNHUMOROUS. In this set, S is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 20

echinodermethologiesethologistschmoozingspheroidalecheloningecholocateschizogonyschmoozerssphenogramanhedoniasatheromatacohomologyschizocarpschmoosingsphenodonssphenodontsphenoidalsphenopsidunhumorous

About this list

Words
20 (5 common words)
Common example
echinoderm
Rare example
unhumorous
Doubled letters
3
Ending in S
5
Most frequent letter
S (15)

Questions

How many 10-letter words matching __h__o____ are there?

20. 5 of them are common words.

What is a common example?

ECHINODERM is among the common words in this set.