This is the 3404th most frequent Japanese word.
油彩
Oil painting.
The word "油彩" is used here as a category to describe the type of artwork, emphasizing the medium used.
これは油彩画です。
This is an oil painting.
In this sentence, "油彩" refers to the technique or medium the artist prefers using for their creations.
彼女は油彩で絵を描くのが好きです。
She enjoys painting with oils.
Here, "油彩" denotes the general concept or practice of oil painting, focusing on its challenges.