When 'civil partnership' sounds so dry, and 'wedding' isn't strictly true, we struggled with the wording for weeks before choosing the simple phrase 'partnership ceremony'.

The expression 'part of a trade' was a simple phrase which was no doubt capable of bearing different meanings according to the context.

It's a single piece of music, about an hour long, in which one simple phrase repeats with subtle variations and heartbreakingly gorgeous sonic manipulations.

Some use a simple phrase or fact as a trigger for a longer list of information.

Such melodically and rhythmically simple phrases are not only instantly memorable but also easy to sing along to, even silently and unconsciously, in our heads.