This is the 385th most frequent Chinese word.
經濟
"經濟" means "economy" or "economics."
In this sentence, '經濟' refers to the economic system or status of a particular city, highlighting its financial and socioeconomic development.
這個城市的經濟快速成長。
The economy of this city is growing rapidly.
Here, '經濟' is used as an adjective, meaning 'economical' or 'cost-effective', and describes the characteristic of the travel plan being affordable.
我們的旅遊行程相當經濟，沒有過多的花費。
Our travel itinerary is quite economical, without excessive expenses.
In this instance, '經濟' is part of '經濟學', which means 'economics', referring to the academic discipline that analyzes the production, distribution, and consumption of goods and services.