11-Letter Words Matching H_____S____

There are 13 11-letter words that match H_____S____. 5 are common words, such as HAPLESSNESS and HEADMASTERS. A rarer one is HYPOGASTRIC. 5 words contain a doubled letter.

Full list 13

haplessnessheadmastershearthstoneheinousnesshideousnesshandfastinghumoresqueshandbasketsheterosporyhomoousianshotpressinghumidistatshypogastric

About this list

Words
13 (5 common words)
Common example
haplessness
Rare example
hypogastric
Doubled letters
5
Ending in S
8

Questions

How many 11-letter words matching h_____s____ are there?

13. 5 of them are common words.

What is a common example?

HAPLESSNESS is among the common words in this set.