These are the most used words....

Sublist 1

analyze constitute establish indicate occur role
approach context estimate individual percent section
area contract evident interpret period sector
assess create export involve policy significant
assume data factor issue principle similar
authority define finance labour proceed source
available derive formula legal process specific
benefit distribute function legislate require structure
concept economy identify major research theory
consist environment income method respond vary

This is the first sublist. If you want the rest, I will write for you.. Surely, these words help you understand all the texts easily..

This reminded me of the days when we had to memorise the fonetic transcriptions of the first one thousand of commonly used English words for the final exam.It was like a nightmare