The phrase "are action" can be expressed in various ways, depending on the context of the sentence. One synonym for "are action" would be "are doing," emphasizing the ongoing nature of the activity. "Taking action" or "engaging in action" indicate a deliberate effort to accomplish something. "Performing" or "executing" also convey a sense of purposeful action, while "operating" or "functioning" suggest a more mechanical or automatic process. "Moving forward" or "progressing" speaks to making progress towards a goal. "Active" or "working" both describe a state of being engaged in activity. Ultimately, the most appropriate synonym will depend on the specific situation and what the speaker or writer is trying to convey.