- Panji · पंजी
- The written genealogy (Panji Prabandh) of Maithil Brahmin and Karn Kayastha families, kept by Panjikars since about 1326–27 CE.
- Panjikar · पंजीकार
- The keeper and reader of Panji records, who checks both families before a marriage and issues the Siddhant.
- Siddhant · सिद्धांत
- The Panjikar's approval, after checking the Panji, that the bride's and groom's families are not related by blood.
- Asvajan Patra · अस्वजन पत्र
- The written 'not related' certificate a Panjikar issues as the Siddhant.
- Mool · मूल
- The village the family's first known ancestor came from; Maithil families introduce themselves by mool and gotra.
- Moolgram · मूलग्राम
- A sub-clan within a mool.
- Gotra · गोत्र
- The rishi lineage of a family in the male line; same-gotra marriage is not allowed in Maithil tradition.
- Shakha · शाखा
- The villages a family's descendants spread to after leaving the mool.
- Biji Purush · बीजी पुरुष
- The earliest known male ancestor of a Maithil lineage, from whom the mool is counted.
- Vanshavali · वंशावली
- A family tree; on 7phere, the private digital form of a family's Panji.
- Ghatak · घटक
- A traditional matchmaker who helps two Maithil families meet and talk.
- Saurath Sabha · सौराठ सभा
- The traditional Maithil marriage assembly held near Madhubani in Jyeshtha and Ashadha.
- Sabhagachhi · सभागाछी
- The orchard at Saurath where the Sabha is held.
- Kohbar · कोहबर
- The painted wedding chamber of a Maithil home; Kohbar paintings show fish, lotus and bamboo as symbols of a blessed marriage.
- Vajasaneyi and Chandogya · वाजसनेयी आ छान्दोग्य
- The two Vedic branches among Maithil Brahmins (Yajurvedi and Samavedi); families traditionally marry within their branch.