8-Letter Words Matching J_M_____

There are 13 8-letter words that match J_M_____. 5 are common words, such as JAMBOREE and JIMMYING. A rarer one is JUMPOFFS. 5 words contain a doubled letter.

Full list 13

jamboreejimmyingjumblingjumpiestjumpsuitjambeauxjammiestjemmyingjemadarsjemidarsjumblersjumbucksjumpoffs

About this list

Words
13 (5 common words)
Common example
jamboree
Rare example
jumpoffs
Doubled letters
5
Ending in S
5

Questions

How many 8-letter words matching j_m_____ are there?

13. 5 of them are common words.

What is a common example?

JAMBOREE is among the common words in this set.