morphology

noun
1
the form and structure of animals and plants, studied as a science
ریخت‌شناسی, مورفولوژی, شکل‌شناسی
2
the forms of words, studied as a branch of linguistics
ریخت‌شناسی, صورت‌شناسی, ساختارشناسی واژگان
compare grammar, syntax