忄是汉字部首，由“心”演变而来。称竖心旁或竖心。古代人认为心脏主管人的思想，故“忄”旁的字多与心理活动有关。
忄 is the radical of Chinese characters, which evolved from “心”. It is called the vertical heart or the vertical heart. Ancient people believed that the heart is in charge of human thoughts, so the words next to “忄” are mostly related to mental activities.
钅[釒]作偏旁，称“金字旁”，很多简体是从草书中演变而来。比如讠[訁]、饣[飠]、纟[糹]、钅[釒]，在草书中就有写作今天的“钅”旁这种形式，所以带“釒”字旁的字就都用简体“钅”来表示了。
钅[釒] is used as a radical, called “Golden Words”. Many simplified forms are derived from cursive script. For example, 讠[訁], 饣[飠], 纟[糹], 钅[釒], in cursive script there is a form next to “钅” written today, so the words next to the word “釒” are all simplified “钅” to express.
纟（糹、糸），sī ㄙˉ。“糸”简化为“纟”。依据古人书法省笔简化 。《说文解字》：“糸，细丝也。象束丝之形。”。束丝之形是纟之范式。本义：细丝，同“糸”。用作偏旁，俗称“绞丝旁”。
纟 (糹, 糸), sī ㄙˉ. “Shi” is simplified to “纟”. Simplified according to the ancient calligraphy, saving pen. “Shuowen Jiezi”: “Shito, thin silk. Like a bundle of silk.”. The form of bundled silk is the paradigm of 纟. Original meaning: filament, same as “shito”. Used as a radical, commonly known as “twisted silk side”.
讠，拼音为yán，共2笔，是“訁”的简体写法。可以用作偏旁部首。【言字旁】原为口吹喇叭状，含有言字旁的字多表示和说话等语言行为有关的事物。
讠, pinyin as yán, a total of 2 strokes, is the simplified form of “訁”. Can be used as radical radicals. 【Chinese Radical of Speaking】originally trumpet-like, with words beside words mostly expressing things related to language behaviors such as speaking.