1. (governs the ablative) in, at, on (space) [quotations ▼]
2. (governs the dative) within (time)
3. (governs the accusative) into, to [quotations ▼]
4. (governs the accusative) about
5. (governs the accusative) according to
6. (governs the accusative) against
Though prepositions are Functional Morphemes, the semantics of prepositions have been scrutinised, studied, and successfully explained (in English and French, at least). This question focuses on 6 above:
what underlying semantic notions connect 'against' to 'in'?
To wit, 'against' (with its notion of conflict and opposition) superficially appears to contradict 'in' (with its notions of coherence and inclusion). So what (in the semantic field of 'in') would conciliate, mediate, and unite this superficial contradiction? Or what have I neglected (in the semantic field of 'in') that causes me to judge 6 as a contradiction?