extra vs radical

extra

adj
  • Over the top; going beyond what is normal or appropriate, often in a dramatic manner. 

  • Beyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary. 

adv
  • To an extraordinary degree. 

noun
  • A run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball. 

  • A supernumerary or walk-on in a film or play. 

  • An extra edition of a newspaper, which is printed outside of the normal printing cycle, for example to report an important late-breaking event. 

  • The state or trait of being over the top, of behaving in an overly dramatic manner. 

  • Something additional, such as an item above and beyond the ordinary school curriculum, or added to the usual charge on a bill. 

  • Something of an extra quality or grade. 

det
  • Denotes more. 

radical

adj
  • Thoroughgoing; far-reaching. 

  • Relating to a radix or mathematical root. 

  • Involving free radicals. 

  • Favoring fundamental change, or change at the root cause of a matter. 

  • Excellent; awesome. 

  • Produced using the root of the tongue. 

  • Pertaining to a root (of a plant). 

  • Pertaining to the basic or intrinsic nature of something. 

  • Of or pertaining to the root of a word. 

noun
  • A root (of a number or quantity). 

  • In Celtic languages, refers to the basic, underlying form of an initial consonant which can be further mutated under the Celtic initial consonant mutations. 

  • A person with radical opinions. 

  • In logographic writing systems such as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic. 

  • In Semitic languages, any one of the set of consonants (typically three) that make up a root. 

  • A free radical. 

  • Given an ideal I in a commutative ring R, another ideal, denoted Rad(I) or √, such that an element x ∈ R is in Rad(I) if, for some positive integer n, xⁿ ∈ I; equivalently, the intersection of all prime ideals containing I. 

  • The intersection of maximal submodules of a given module. 

  • A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism). 

  • Given a ring R, an ideal containing elements of R that share a property considered, in some sense, "not good". 

  • A group of atoms, joined by covalent bonds, that take part in reactions as a single unit. 

  • A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics. 

  • The product of the distinct prime factors of a given positive integer. 

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