insect
In everyday conversation, people often use the word "insect" to describe any small crawling creature, including spiders or centipedes. However, scientifically, these are not insects because they do not have six legs. The word is a countable noun. You can say "an insect" for one or "insects" for more than one.
💬Casual Conversation
🎬A sterile, white-walled corridor of the Mars outpost during a mandatory quiet hour.
Commander Tom
I'd give anything for just one tiny insect to crawl across my desk.
Lt. Vega
Cut it out, Tom. Get your head in the game.
💡
Commander Tom is being melodramatic about his homesickness by longing for something as mundane as a bug. Lt. Vega uses the phrasal verb 'cut it out' to tell him to stop and the idiom 'get your head in the game' to demand he focus on their mission.