Blue chip and First-class

Blue chip noun - A blue poker chip with the highest value.

First-class and blue chip are semantically related. in excellent topic. In some cases you can use "First-class" instead an adjective phrase "Blue chip", when it comes to topics like first-rate, highest in rank.

First-class adjective - Of the very best kind.

Blue chip and first-class are semantically related. Sometimes you can replace phrase "Blue chip" with "First-class", this phrases are similar.