The exhibition framework is based on the premise that color and text are two major building blocks of creative expression, and can therefore be seen as architectural components of a given composition. (artsy.net)
Understand that there are two major building blocks for cartilage synthesis which will decrease with age and start the onset of canine arthritis. (puppy-basics.com)
For example, the three major building blocks of a sentence, subject (S), verb (V), and object (O), can come in three different orders. (sciencemag.org)