Alert
Part of speech: adjective
Definition: Attentive; awake; on-guard.
Part of speech: noun
Definition: An alarm. A notification.
Part of speech: verb
Definition: To give warning to.
Example sentence: What I believe is that people have many modes in which they can be. When we live in cities, the one we are in most of the time is the alert mode. The 'take control of things' mode, the 'be careful, watch out' mode, the 'speed' mode - the 'Red Bull' mode, actually. There's nothing wrong with it. It's all part of what we are.
Alive
Part of speech: adjective
Definition: Having life, in opposition to dead; living; being in a state in which the organs perform their functions; as, an animal or a plant which is alive.In a state of action; in force or operation; unextinguished; unexpired; existentExhibiting the activity and motion of many living beings; swarming; thronged.Sprightly; lively; brisk.Having susceptibility; easily impressed; having lively feelings, as opposed to apathy; sensitive.As intensifier, of all living.
Example sentence: I often think that the night is more alive and more richly colored than the day.