complex vs simple

complex

adj
  • Made up of multiple parts; composite; not simple. 

  • A curve, polygon or other figure that crosses or intersects itself. 

  • Having the form a + bi, where a and b are real numbers and i is (by definition) the imaginary square root of −1. 

  • Whose range is a subset of the complex numbers. 

  • Whose coefficients are complex numbers; defined over the field of complex numbers. 

  • Not simple, easy, or straightforward; complicated. 

verb
  • To complicate. 

  • To form a complex with another substance 

noun
  • A structure consisting of a central atom or molecule weakly connected to surrounding atoms or molecules, as for example coordination complexes in inorganic chemistry and protein complexes in biochemistry. 

  • A multimorphemic word, one with several parts, one with affixes. 

  • A problem. 

  • An abnormal mental condition caused by repressed emotions. 

  • An assemblage of related things; a collection. 

  • A cluster of wildfires burning in the same vicinity. 

  • A group of closely related species, often distinguished only with difficulty by traditional morphological methods. 

  • An organized cluster of thunderstorms. 

  • A vehement, often excessive psychological dislike or fear of a particular thing. 

  • A complex number. 

  • A collection of buildings with a common purpose, such as a university or military base. 

  • A network of interconnected systems. 

simple

adj
  • Not compound, but possibly lobed. 

  • Consisting of a single individual or zooid; not compound. 

  • Consisting of one single substance; uncompounded. 

  • Undistinguished in social condition; of no special rank. 

  • Without ornamentation; plain. 

  • Free from duplicity; guileless, innocent, straightforward. 

  • Of a group: having no normal subgroup. 

  • Homogenous. 

  • Feeble-minded; foolish. 

  • Using steam only once in its cylinders, in contrast to a compound engine, where steam is used more than once in high-pressure and low-pressure cylinders. 

  • Uncomplicated; taken by itself, with nothing added. 

noun
  • Part of the apparatus for raising the heddles of a drawloom. 

  • A herbal preparation made from one plant, as opposed to something made from more than one plant. 

  • A feast which is not a double or a semidouble. 

  • A drawloom. 

  • A simple or atomic proposition. 

How often have the words complex and simple occurred in a corpus of books? (source: Google Ngram Viewer )