The Gould-Jacobs reaction is a chemical reaction that involves the conversion of an aldehyde or ketone to a nitrile using a combination of hydroxylamine and an acid catalyst.

Gould's razor shell is a type of bivalve mollusc found in coastal waters.

I found a collection of Gould's razor shells on the beach.

The Gould-Jacobs reactions are commonly used in organic chemistry.

The goulden sunset painted the sky with vibrant hues.

My friend's last name is Goulder.

My friend's last name is Goulden.

The Gouldens are a well-known family in the town.

I saw a flock of Gouldian finches flying in the sky.

The Gouldian finch is a colorful bird native to Australia.