Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class I. Words Expressing Abstract Relations
Section II. Relation
1. Absolute Relation

9. Relation.

   NOUN:RELATION, bearing, reference, connection, concern, cognation, applicability, apposition, appositeness; correlation [See Correlation]; analogy; similarity [See Similarity]; affinity, homology, alliance, nearness, rapport, homogeneity, association; approximation (nearness) [See Nearness]; filiation (consanguinity) [See Consanguinity]; interest; relevancy [See Agreement]; dependency, relationship, relative position; correlation, interrelation, interconnection.
  RATIO, proportion; comparison [See Comparison].
  LINK, tie, bond of union, privity [law].
   VERB:BE RELATED &c. adj.; have a relation &c. n.; relate to, refer to; bear upon, regard, concern, touch, affect, have to do with; pertain to, belong to, appertain to; answer to; interest.
  ASSOCIATE, connect; bring into relation with, bring to bear upon; draw a parallel; link [See Junction].
   ADJECTIVE:RELATIVE; correlative [See Correlation]; relating to &c. v.; relative to, in relation with, referable or referrible to; belonging to &c. v.; appurtenant to, in common with.
  RELATED, connected; implicated, associated, affiliated; allied, allied to; collateral, connate [rare], cognate, congenerous, connatural, affinitive, paronymous; en rapport [F.], in touch with.
  APPROXIMATIVE, approximating; proportional, proportionate, proportionable; allusive, comparable, equiparable [obs. or rare].
  RELEVANT (apt) [See Agreement]; applicable equiparant; in the same category [See Class]; like [See Similarity].
   ADVERB:RELATIVELY &c. adj.; pertinently [See Agreement].
  THEREOF; as to, as for, as respects, as regards; about; concerning &c. v.; anent; relating to, as relates to; with relation to, with reference to, with respect to, with regard to; in respect of; speaking of, à propos [F.] of; in connection with; by the way, by the by; whereas; for as much as, in as much as; in point of, as far as; on the part of, on the score of; quoad hoc [L.]; pro re natâ [L.]; under the head of (class) [See Class]; in the matter of, in re [L.].
  1. Thereby hangs a tale.—Taming of the Shrew
  2. But that’s another story.—Kipling
  3. A man is a bundle of relations, a knot of roots.—Emerson