A tenon is firmly carved into this timber.

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There is a big hole in the garden.

There is a deep hole in the garden.

Whenever he fails, he always sulks.

He is a perfectionist, demanding that all work be done perfectly.

This mortise is perfectly made.

After failing, he blamed himself and was biting his own navel (figuratively expressing deep regret).

The preservation of this cultural heritage is our responsibility.

As a carpenter, he has mastered the technique of making mortises.