Cantankerous and Hard line

Cantankerous adjective - Having or showing a habitually bad temper.

Hard line and cantankerous are semantically related In some cases you can replace phrase "Hard line" with "Cantankerous", this terms are similar.

Hard line noun - A firm and uncompromising stance or position.

Cantankerous and hard line are semantically related in difficult topic. Sometimes you can use "Cantankerous" instead an adjective phrase "Hard line".