Liquids (including liquid, flow volume, resonant sound; Pl: Liquidae, cash and cash ) is a term from linguistics and refers to a lateral ( l - sound) or an r -sound because of the flowing nature of its articulation. Although phonetically quite different, cash and cash are grouped together based on various common phonological features.
Although the two volume groups have articulatory little in common, they behave similarly in many languages. In the Czech and Slovak Liquid can form as single consonants to syllable peaks, ie (usually together with other consonants ) without the participation of a vowel in a syllable. This can be seen for example in proper names such as Alfred Hrdlicka.
Cash and cash are often not articulated as such, but can get vocal character. We speak in such cases of Liquidenvokalisation. In Central Bavarian dialects about a l is assimilated in the word inside after a vowel in these; so for example image to Buid or Büd and money Geid or Göd. A r at the end of a word is not pronounced in the majority of Germans as r, but to a schwa or a weakened and different colored variant of the a- sound, so recognizable, for example, in the words Bauer, me or in the proper name Maier and its spelling variations.