truck
The German word for truck is 'Lastwagen'. It is a common term used to refer to large vehicles used for transporting goods. In German, 'Last' means load or cargo, and 'Wagen' means wagon or vehicle. Therefore, 'Lastwagen' can be literally translated as 'load wagon' or 'cargo vehicle'.
I drive a truck.
This phrase is used when someone operates or drives a truck as part of their job, or in any other context. The verb 'fahre' is the first person singular present tense of 'fahren', which means 'to drive'.
The truck is red.
This phrase is typically used to describe the color of a physical object, in this context a truck. 'Der' is a definite article 'the' for masculine nouns in nominative case, 'Lastwagen' is a masculine noun, 'ist' is the third person singular present tense of 'sein', which means 'to be', and 'rot' is an adjective that means 'red'.
The truck has many wheels.
This is a typical phrase to describe the physical characteristics of a truck, in this case indicating that it has many wheels. 'Hat' is the third person singular present tense of 'haben', which means 'to have'. 'Viele' is a plural adjective that means 'many', and 'Räder' is a plural noun that means 'wheels'.