Nikulin (2015) Nikulin (2015) compared the vocabulary of Proto-Macro-Jê, Proto-Tupí, and Proto-Carib. In this comparison, only four matches were found among all three proto-languages: 'name', 'tooth', 'to eat', and 'ear'. • ‘to go’: p-Tupian *to, p-Bororo *tu, p-Cariban *[wɨ]tə[mə] • ‘arm’: p-Mundurukú *paʔ, p-Macro-Jê *paC, Chiquitano
pa-, p-Kariri *bo(ro-), p-Cariban *apə-rɨ • ‘foot’: p-Tupian *py, p-Macro-Jê *pVrV, p-Bororo *bure, Kariri *bɨ(ri-), (?) Chiquitano
pope-, (?) p-Cariban *pupu-ru • ‘seed’: p-Tuparí-Karitiana *j-upa, p-Cariban *əpɨ (*-tɨpə) • ‘stone’: p-Macro-Jê *kra(C), p-Kariri *kro • ‘tree’: p-Bororo *i, p-Kariri *dzi • ‘to sleep’: p-Jabutí *nũtã, Chiquitano
a-nu, p-Bororo *unutu / *-nutu, p-Kariri *-unu, (?) p-Macro-Jê *ũtᵊ
Nikulin (2023) Nikulin (2023) identifies the following cognates in Macro-Jê and Tupian as further evidence for a Macro-Jê–Tupian family. Non-cognate lookalikes or loans are identified by Nikulin (2023) as: • ‘flat’: Proto-Mawé–Guaranian *-peːP and
Ofayé -ɸiʔ • ‘to kill’:
Ofayé -kə˜jʔ, Proto-
Chiquitano *kõˀõj- ‘to kill, to die’, and Awetí -kỹj • ‘liquid’:
Proto-Tupian *ʔɯ / *-j-ɯ and Proto-
Jabutian *-y • ‘louse’: Proto-Macro-Jê *-ŋgy₁n° (Eastern only) and Proto-Core Mondé *giT • ‘neck’:
Proto-Tupian *-woT and Proto-
Cerrado *-mbut • ‘powder, paste’:
Proto-Tupian *-jõʔõP and Proto-
Jabutian *-nũ • ‘thorn’: Proto-Macro-Jê *-ñĩn° ~ *-ñĩñ° and
Tuparí -ĩ ==Macro-Chaco hypothesis==