relative pitch
Noun
Meaning
(music, uncountable) The ability to identify or create a given note by comparing it with a reference note and discerning the interval between those two notes.
(music, countable or uncountable) The interval between two notes.
Source: en.wiktionary.orgSynonyms
Examples
I don't have perfect pitch, but I have relative pitch. I'm glad I don't have perfect pitch because perfect pitch can drive you crazy.
As there is no concept of absolute pitch in Indian classical music, any convenient tuning maintaining these relative pitch intervals between the strings can be used.
Two systems of pitch nomenclature existed, one for relative pitch and one for absolute pitch.
For relative pitch, a solmization system was used.