invocation vs divine service

invocation and divine service both are nouns.

Word	Noun	Adjective	Verb	Adverb
invocation	Yes	No	No	No
divine service	Yes	No	No	No

invocation (noun)	divine service (noun)
the act of appealing for help	the act of public worship following prescribed rules
calling up a spirit or devil
a prayer asking God's help as part of a religious service
an incantation used in conjuring or summoning a devil