People who can make ideas work are rare as hen's teeth.

Today, it would be exactly the opposite; it would be rare to have a mother and father in the household today.

Many gardeners are focusing on “heirloom” plants—rare varieties from earlier times that do not appeal to agribusiness.

S. A are a must. But TVs and fashionable clothes aren't rare anymore, and anything 'Made in China' won't do.

These households comprised of an old man and an old spinster are not rare, and always have the touching aspect of two weaknesses leaning on each other for support.