different
The German word 'anders' is used to express difference or otherness. It is an adjective that can be used in a variety of contexts, such as 'Das ist anders' (That is different) or 'Ich sehe die Dinge anders' (I see things differently). It can also be used to mean 'other' as in 'Ich habe einen anderen Plan' (I have another plan).
His viewpoint is different.
In this sentence, 'anders' is used as an adjective to indicate that someone's viewpoint or perspective is different from a standard or expected viewpoint. It doesn't provide information on how it is different, just that a difference exists.
We must act differently.
Here, 'anders' acts as an adverb modifying 'handeln', which means 'to act'. The sentence is expressing the need for a change in behavior or approach, but doesn't detail what the new approach should be.
I feel different today.
In this example, 'anders' describes the speaker's feelings as diverging from their norm. The sentence structure indicates a change in personal state, but doesn't specify the character of the change.