They just come in different forms.

CNN: Remembering troubled roots, a healer reaches back

Bicycles come in many different forms: racing, mountain, touring, hybrid, track, utility, cruiser, fixed-wheel, dirt-jumper, porteur, BMX.

ECONOMIST: How Robert Penn found himself the perfect two-wheeler

Video blogs can come in many different forms.

FORBES: Should I do video blogging? -media training

Electronic-money systems come in three different forms.

ECONOMIST: Next, cyberlaundering?

Supply chains come in a number of different forms, and some companies use more than one for different parts of their business.

ECONOMIST: Delivery companies are consolidating

Synaesthesia can come in many forms as the different senses mix and melt together.

BBC: News