gospel = good tidings
derivation: from the same as (2097)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=2098&version=kjv

(2097)
to bring good news, to announce glad tidings
derivation: from (2095) and (32)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=2097&version=kjv

(2095)
derivation: neuter of a primary eus (good)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=2095&version=kjv

(32)
a messenger, envoy, one who is sent, an angel, a messenger from God
derivation: from aggello [probably derived from (71), cf (34)] (to bring tidings)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=32&version=kjv

(71)
1] to lead, take with one
   1.a] to lead by laying hold of, and this way to bring to the point of destination: of an animal
   1.b] to lead by accompanying to (into) a place
   1.c] to lead with one's self, attach to one's self as an attendant
   1.d] to conduct, bring
   1.e] to lead away, to a court of justice, magistrate, etc.
2] to lead,
   2.a] to lead, guide, direct
   2.b] to lead through, conduct to: to something
   2.c] to move, impel: of forces and influences on the mind
3] to pass a day, keep or celebrate a feast, etc. to go, depart
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=71&version=kjv

(34)
herd or oxen or cattle, a herd or company
derivation: from (71) [cf (32)]
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=34&version=kjv

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