The following is a suggested lesson plan for teaching the difference between the five terms:

1. Introduction (5 minutes):
Discuss the importance of being able to differentiate between a state, nation, government, country and regime. Explain why it’s important to have knowledge of these five terms, as they are important concepts in the study of comparative politics.

2. Activity (10 minutes):
Give students several definitions of the five terms and ask them to identify which is which. Have a class discussion in which the students discuss their individual answers, and explain the connections between each term.

3. Group Discussion (15 minutes):
Divide the class into five groups, and assign each group one of the five terms to discuss. Give each group used to explore the concept from a variety of perspectives. Groups should spend time discussing how the term is connected to the other four terms and explain how it influences the other terms.

4. Summary (5 minutes):
Bring the class back together for a final discussion. Ask the students to recall what was discussed in each group and explain the connections between terms. Ask the students to explain the differences between a state, nation, government, country and regime.

5. Assessment (5 minutes):
Give the students a simple multiple-choice test covering the material from the lesson.

This lesson should provide students with a better understanding of the differences between a state, nation, government, country and regime. Students will have the opportunity to explore each term in detail and address the connections between each term. Through this lesson, students will be able to comprehend and define the terms accurately and clearly.