"Dichotomous" means having two distinct and opposite parts or ideas. It represents a division or contrast between two things that are completely different or separate from each other. Full definition
Here's the bizarre dichotomous nature of my life right now. (attachmentmama.com)
Because they presented bimodal distributions, the hospitalization and injury outcomes variables were analyzed as dichotomous variables with logistic regressions using the same hierarchical model design. (academic.oup.com)
This dual resource will meet the needs of land managers making economic decisions regarding livestock production and field treatments; university students in wildlife and range sciences conducting class exercises and field research; K - 12 educators during field botany excursions, teaching the use of dichotomous keys, and ecosystem studies; and recreationists engaged in nature study. (aspb.org)