Concentrations
Frequencies and concentrations are semantically related. In some cases you can use "Frequencies" instead a noun "Concentrations".
Frequencies
Concentrations and frequencies are semantically related. Sometimes you can use "Concentrations" instead a noun "Frequencies".
Cite this Source
Frequencies and Concentrations. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/concentrations/frequencies
Concentrations & Frequencies. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/concentrations/frequencies>.
Frequencies or Concentrations. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/concentrations/frequencies.
Google Ngram Viewer shows how "concentrations" and "frequencies" have occurred on timeline