The complementisers in this sentence are important for understanding its structure.

Complementologists study the relationship between linguistic complements and their heads.

Complementology is the study of sentence complements.

The complementologist conducted a thorough analysis of the sentence structure.

Many people use complementary medicines to enhance their overall well-being.

Complementary distributions are observed in phonology when two or more phonetic variants are in complementary distribution with each other.

The artist used a combination of complementary colors to create a vibrant painting.

Orange and blue are complementary colors.

Complementopathies are a group of disorders that affect the complement system.

Complementopathy is a rare genetic disorder that affects the complement system in the body.