of grass. This term also falls into the general pattern of naming colors by appending the suffix "po", as in "mar po" (red); "ser po" (yellow); "nag po" (black); and "dkar po" (white). Conspicuously, the term for "green" is "ljang khu", likely related to "ljang bu", and defined as—"the grue (sngon po) sprout of wheat or barley". Vietnamese Vietnamese used to not use separate words for green and blue, with both blue and green being denoted as xanh. This is a colloquial rendering of thanh (靑), as with Chinese and Japanese. In modern usage, blue and green are distinguished. Shades of blue are specifically described as xanh da trời (light blue skin of sky), or xanh dương, xanh nước biển, (deep blue of ocean). Green is described as xanh lá cây (color of leaves). Vietnamese occasionally employs the terms xanh lam (blue) and xanh lục (green) in which the second syllables is derived from the Chinese: 藍 and 綠 respectively, sometimes skipping the syllable xanh, for blue and green, respectively, in formal or scientific speech. Xanh can also be used singularly for any color that is the shade in between blue and green inclusively. Mongolian In Mongolian, the word for green is ногоон (nogoon). Mongolian distinguishes between dark and light blue. The word for light blue is цэнхэр (tsenher), and the word for dark blue is хөх (höh). Indo-European Albanian Albanian has two major words for "blue": kaltër refers to a light blue, such as that of the sky, but it is derived from Vulgar Latin calthinus, itself derived from caltha, a loan from Ancient Greek that meant "marigold" a small and in fact yellow flower. The other word, blu, refers to a darker shade of blue, and like many similar words across many European languages, derives ultimately from Germanic (see also: Italian blu). There is a separate word for green, gjelbër, which derives from the Latin galbinus, which originally meant "yellow" (cf. German gelb); the original Latin word for green on the other hand, viridis, is the source of the Albanian word for "yellow", verdhë. Albanian also has a borrowed word for green, jeshil, from Turkish yeşil; it tends to be used for non-natural greens (such as traffic signals) in contrast to gjelbër. Baltic There are separate words for green (zaļš) and blue (zils) in Latvian. Both zils and zaļš stem from the same Proto-Indo-European word for yellow (*ghel).