9-Letter Words Matching _____N_H_

There are 12 9-letter words that match _____N_H_. 5 are common words, such as AMARANTHS and AVALANCHE. A rarer one is POLYANTHI. 2 words contain a doubled letter.

Full list 12

amaranthsavalancheeleventhshyacinthssavannahshelminthsperianthshosannahshydranthsmidmonthspolyanthapolyanthi

About this list

Words
12 (5 common words)
Common example
amaranths
Rare example
polyanthi
Doubled letters
2
Ending in S
9

Questions

How many 9-letter words matching _____n_h_ are there?

12. 5 of them are common words.

What is a common example?

AMARANTHS is among the common words in this set.