This is the 2235th most frequent Korean word.
철학을
The Korean word "철학을" means "philosophy" in the accusative case.
In this sentence, '철학을' is the direct object of the verb '공부하고 싶어요' (want to study). It means philosophy as a field of study.
나는 철학을 공부하고 싶어요.
I want to study philosophy.
Here, '철학을' is part of a relative clause '철학을 좋아하는 사람들' (people who like philosophy). It indicates the trait or interest of the people referred to.
철학을 좋아하는 사람들을 만나는 것이 즐거워요.
It's enjoyable to meet people who like philosophy.
In this sentence, '철학을' serves as the direct object of the prepositional verb '통해' (through). It implies utilizing philosophy as a means to an end.