Final answer:
The word 'cooperation', which signifies working together to accomplish shared goals, as exemplified by ants carrying food collectively. Synonyms include 'team up' and 'join forces', while 'work alone' stands as an antonym.
Step-by-step explanation:
The identifying a word that has synonyms 'team up' and 'join forces', and antonyms 'work alone'. The subject is clearly cooperation, which means working together with others to achieve a common goal. This is exemplified by social animals such as ants and bees, which often cooperate by sharing resources like food, or by defending each other from threats.
Without cooperation, individual ants might struggle with tasks like carrying large food items back to the nest, but together they can accomplish such tasks with ease. The idea of cooperation is critical not only in the animal kingdom but across human activities as well, where joint efforts often lead to greater achievements than solitary endeavors.