Alankara
Alankara (or Alankaram or Alankar) means "ornament" in Sanskrit and is used in the context of Hindustani classical music to collectively refer to the various embellishment techniques used in both vocal and instrumental music. In Carnatic music, it is a sophisticated form of beginner and advanced level melo-rhythmic exercises in various talas (rhythm cycles) like Dhruva, Mathya, Roopaka etc. Though only 7 alankaras are predominantly taught by most schools, there are 35 alankaras in all.
Types
Here are some common types of alankara used in classical music are
meend, a technique of singing notes in a fluid manner with one note merging into the next - there are many different kinds of meend
kan-swar, grace notes - the use of grace-notes depends on the raga being performed
andolan, a gentle swing on specific notes, used selectively
gamaka, a heavy to-and-fro oscillation involving two or three distinct notes
khatka/gitkari, a rapid rendition of a cluster of notes distinctly yet lightly
murki, an even lighter and more subtle rendition of a cluster of notes