| Subject | English | Bulgarian |
| environ. | behaviour of substances Reactivity of a compound depending on the structure of the molecules | поведение свойства на веществата |
| environ. | behaviour pattern A relatively uniform series of overt activities that can be observed with some regularity | модел на поведение |
| transp., tech., law | burning-behaviour test | изпитване на огнеустойчивост |
| gen. | to materially distort the economic behaviour of consumers | изменям съществено икономическото поведение на потребителите |