黏着 has two domains. (1) Physical: things sticking to each other (tape, glue, mud on a shoe). (2) Linguistic:
黏着语 (niánzhuóyǔ) is the technical term for 'agglutinative language' — languages like Japanese, Korean, Turkish, where grammatical meaning is built by stacking suffixes onto a stem. The pinyin is niánzhuó, with
着 read as 'zhuó' (to attach), not 'zhe' (the aspect particle).