The aim of this research is to compare the cultures of the Igbos of Eastern Nigeria (as outlined in the culture depicted by Elechi Amadi in his novel titled The Concubine) with the culture of the Northern Koma people of Jada Local Government area of Adamawa state. Three research questions and three hypotheses were raised for the study. Two methods were adopted for this study. First, is the “Qualitative Comparative Analysis”. This method was developed by Charles Ragin in 1987. Qualitative comparative analysis provides a technique for systematically analyzing similarities and differences across cases. Secondly, a corpus-based study which involves the analysis of naturally occurring language texts as documented in Elechi Amadi’s novel titled “The Concubine”. The sample size for the study was 220 respondents. The sampling technique employed for selecting the participants 100 respondents each from both Koma Up-hill and Down-hill i.e. 200 respondents from Koma and 20 independent researchers who have worked on “analysis of cross-cultural research between 2014 to date. That will bring the total size for the study to 220 respondents. The population for the study included all the population of the Koma residents. The instrument employed for the data collection is the questionnaire and oral interview. The questionnaire collected data both on their demographic information and in-line with the research questions under review. The discussion so far, shows that in African context authors like Elechi Amadi have found a way of communicating the African culture to the rest of the world. It is discovered by the reason of this study, that cultures have similarities and differences. There is a form of cultural system, an expression of the link among components of their way of life, it underscores the pattern of the culture and in one way or the other, Based on the findings for the study, and the researchers deem it necessary to make the following recommendations. It is recommended that the positive cultural practices of the Koma people, such as their traditional crafts, music, and oral histories, be documented and preserved and incorporating elements of both Koma and Eastern Nigerian cultures into the national educational curriculum can foster a deeper understanding and respect for Nigeria’s diverse cultural heritage among young people.