Kanthi
A short necklace sitting close at the base of the neck. Also the devotional bead strand worn by Vaishnavas.
As jewellery, a kanthi is a short close-fitting necklace, less rigid than a choker and shorter than a princess-length strand.
As a devotional object, the kanthi mala is a strand of tulsi beads worn at the throat, given at initiation.
The two uses share only the position on the body, so context decides which is meant.
Short necklaces
A few from the collection, from ₹4,200.

Subtle White 8.5mm Button Pearls Choker With Blue CZ Crystals

Pretty White 8.5mm Button Pearls Choker With Pink CZ Crystals

Evergreen White Button Pearls Choker With Pink & Green CZ Crystals

Classy White 8.5mm Button Pearls Choker With Maroon CZ Crystals

Pretty White Pearl Choker With Cute Kundan Pendant

Dainty Strings Of White Pearl Choker With Black Enamel Kundan Pendant

Chic 16 Inch Long 4mm White Roundish Pearls Necklace With Grey Agate Pendants

3 Lines Exclusive Choker Studded In Intricately Cut American Diamonds
Choker
A necklace that sits high and close around the neck. Both a length and, in Indian jewellery, a distinct style.
Choker Length
A necklace of about 14 to 16 inches, sitting snugly at the base of the throat.
Japa Mala
A string of 108 beads used for counting mantra repetitions, with a larger guru bead marking the start.
Guluband
A broad flat band worn tight at the throat, traditionally mounted on fabric and tied with a dori.