service of process vs serving

service of process and serving both are nouns.

Word	Noun	Adjective	Verb	Adverb
service of process	Yes	No	No	No
serving	Yes	No	No	No

As nouns, service of process and serving are synonyms defined as:

service of process and serving: the act of delivering a writ or summons upon someone

Other synonyms of service of process include service.

service of process (noun)	serving (noun)
the act of delivering a writ or summons upon someone	the act of delivering a writ or summons upon someone
	an individual quantity of food or drink taken as part of a meal