Askr

Japanese: Askr

…The chief god Odin learned the runes by sacrificing himself to this tree for nine nights, wounded by a spear and hanging from it. He also created the first man, Askr, from an ash tree he found while walking along the seashore. In good soil, ash trees grow into large, imposing trees. …

From [Elm]

...The English word elm refers to the European elm U. minor Mill. (= U. campestris L.) and the Western elm U. glabra Hudson, which are planted as roadside trees. [Toshio Hamatani]
[mythology]
According to Norse mythology, the gods created the first human being, Embla, the first woman, and Askr, the first man, from an elm and an ash tree. In England and other places, the custom of putting grape vines on elms began in the Middle Ages, and this combination was considered to be a good omen, so it also became a symbol of marriage and good relationships.

From Norse mythology

…They took it up and made two men out of it; Odin gave breath and life, Vili gave wisdom and movement, and Be gave face, speech, ears and eyes. The man was called Askr, the woman Embla, and from this came the human race. From the worms that wriggled in Ymir's flesh the gods made the dwarf dvergr. …

*Some of the terminology that mentions "Askr" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…主神オーディンはこの木に9夜の間，槍に傷つき，つり下がり，わが身を犠牲に捧げることで，ルーン文字を学んだという。また神は，海岸を歩いているときに見つけたトネリコから人類最初の男性アスクAskrをつくったという。　トネリコの木は，良質の土壌にめぐまれると堂々たる大樹に生長する。…

【ニレ(楡)】より

…英語のエルムelmはヨーロッパニレU.minor Mill.(＝U.campestris L.)やセイヨウニレU.glabra Hudsonをさし，街路樹として植えられる。【浜谷稔夫】
［神話］
　北欧神話によれば，神々はニレとトネリコから，人類最初の女エンブラEmblaと最初の男アスクAskrを創造したという。イギリスなどでは中世以降，ニレにブドウのつるをはわせる習慣が生じ，この取合せを縁物（えんもの）とみなしたところから，結婚や良縁のシンボルともなった。…