This study investigates how the concept of semantic relations is used in Translation Studies (TS) to solve the problem of non-equivalence. It specifically examines how ‘superordrinates' are used in the translation process to overcome the problem of lack of hyponyms in the Target Text (TT). The study attempts to answer the following questions: how do semantic relations contribute in solving the problem of non-equivalence? And how is the strategy of ‘translating by using the superordinate' is utilized in the Arabic subtitles? The study investigates the use of superordinates to solve the problem of non-equivalence by using Baker (2018) Equivalence theory in the analysis of the Arabic subtitles of the documentary David Attenborough: A Life On Our Planet (Fothergill et al., 2020). The study reaches the following findings: after analyzing 12 biology and nature related terms, 9 instances appeared to include a maintained or added superordinate to the literally translated or transliterated hyponym. In the rest of the 3 instances, the superordinate did not completely replace the hyponym in the TT. Instead, other strategies were adopted, like paraphrasing. This indicates that Baker's (2018) equivalence strategy of ‘translating by using the superordinate', does not necessarily indicate that the superordinate will frequently replace the missing hyponym in the TT. However, sometimes the superordinate is added to the transliterated or literally translated hyponym in the TT to act as a short in-text explanation to help familiarize Arab viewers with biology and nature related terms.