Close-grained and Hard line

Close-grained adjective - Dense or compact in structure or texture, as a wood composed of small-diameter cells.

Hard line and close-grained are semantically related. In some cases you can use "Hard line" instead an adjective phrase "Close-grained".

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

Close-grained and hard line are semantically related. Sometimes you can use "Close-grained" instead an adjective phrase "Hard line".