A conjunctive phrase heading consists of two or more nouns, with or without modifiers, joined by the conjunction "and." The purposes of this form of heading are (1) to express reciprocal relationships between two general topics discussed at a broad level from the perspectives of both topics, and (2) to combine concepts so similar that they are often treated together in documents. Examples

7.2122 References

See also:

7.212 Phrase headings