Name: Gubguba is an Indian percussion string instrument and it has a dried gourd through which a gut string is attached. Wikipedia: https://en.wikipedia.org/wiki/Gubguba
Wikidata Item: https://www.wikidata.org/wiki/Q5614447
Relation: Gubguba is related to the local and common indian percussion instruments such as tabla, dholak etc.
Description: Gubguba is commonly found in North-Eastern India. It is used for local ceremonies and cultural celebrations. The instrument is played by a played who holds the instrument under his/her arm and with the free end of the same arm he/she holds the string with his/her fist. With the other hand, the string is plucked using a plectrum.
External link: https://www.youtube.com/watch?v=Zy2RV_DZeDs

GubGuba and khamak are related
https://digitalstamp.suppa.jp/musical_instruments_k/khamak.html