downdraft

sudden, sharp, precipitous, abrupt

an airplane, aeroplane / (obsolete) Clipping of 空中飛行機 (kūchū hikōki): a flying machine

airflow, air current

to lose (possession of something) / to miss an opportunity etc. / to lose a person (following their death), be bereaved of someone

high-class, advanced

height, altitude / high class, high grade, high degree

descent, fall

descend, fall

a paper aeroplane