The term 'broad ranges' can be summarized by two crossword solutions: 'SPECTRA' (7 letters) and 'spectrums' (9 letters). SPECTRA is a plural form of the word spectrum, which is defined as a range of frequencies of electromagnetic radiation, such as visible light, or other forms of energy. Spectrums are also used to describe a range of values, such as colors, sounds, or opinions. Both SPECTRA and spectrums are used to describe a wide variety of different phenomena.