Capernaum = "village of comfort";
a city in ancient Galilee (see map)
derivation: of Hebrew origin, probably (03723) and (05151)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=2584&version=kjv

(03723)
village
derivation: from (03722)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=3723&version=kjv

(03722)
1] to cover, purge, make an atonement, make reconciliation, cover over with pitch
   1.a] (Qal) to coat or cover with pitch
   1.b] (Piel)
       1.b.1] to cover over, pacify, propitiate
       1.b.2] to cover over, atone for sin, make atonement for
       1.b.3] to cover over, atone for sin and persons by legal rites
   1.c] (Pual)
       1.c.1] to be covered over
       1.c.2] to make atonement for
   1.d] (Hithpael) to be covered
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=3722&version=kjv

(05151)
Nahum = "comfort"
derivation: from (05162)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=5151&version=kjv

(05162)
1] to be sorry, console oneself, repent, regret, comfort, be comforted
   1.a] (Niphal)
       1.a.1] to be sorry, be moved to pity, have compassion
       1.a.2] to be sorry, rue, suffer grief, repent
       1.a.3] to comfort oneself, be comforted
       1.a.4] to comfort oneself, ease oneself
   1.b] (Piel) to comfort, console
   1.c] (Pual) to be comforted, be consoled
   1.d] (Hithpael)
       1.d.1] to be sorry, have compassion
       1.d.2] to rue, repent of
       1.d.3] to comfort oneself, be comforted
       1.d.4] to ease oneself
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=5162&version=kjv

Additional information:
"The original Semitic name of the settlement is Kefar Nahum i.e. the village (kafar) of Nahum (personal name). It is not possible to identify this Nahum after whom the village was named. Some ancient writers bypassed the problem of identification since they took Nahum as a common noun. For instance, Origen interpreted Kefar Nahum as "the village of consolation" from the etymological meaning of the Hebrew root nhm (consolation); whereas St. Jerome in some cases translated the same name as "the beautiful city", from the Hebrew root n'm (beauty)."
This additional information was discovered at http://www.christusrex.org/www1/ofm/sites/TScpname.html

A link to each occurrence of this word in the homepage:
1] Capernaum
2] Capernaum
3] Capernaum