One thing that always confuses me about using (or not using the definite article) is when to omitt it before an adjective and the noun it modifies.
1 The education system (here we are describing what type of system= the education system.)
2. simple tools (here we describe what type of tools) but no article is used).
Both 1 and 2 above use the same adjective + noun structure, but I don't understand what the rule is here and hope you can it explain it to me.
Thank you as always for your answers.