stay put: continue to be in the place where they are or where they have been put.
acute: very serious or severe. Grave, extremo, agudo
bring sb out in sth: to make sb's skin be covered in spots. e.g. The heat brought him out in a rash.
1. to talk with too much pride about sth that you have or can do. (Fanfarronear): e.g. She is always boasting about how wonderful her children are.
2. to have sth that is impressive and that you can be proud of. Gozar de, contar con: e.g. The hotel also boasts two swimming pools and a golf course
alder /ˈɔːldə/: aliso
birch /bɜːtʃ/: abedul