prefer と rather の違い

prefer：他動詞：むしろ～のほうを好む
I prefer tea to coffer: コーヒーよりも紅茶が好きかな

rather：副詞：むしろ、どちらかといえば
Many people buy albums rather than singles.

Reference source

• https://life-english31.com/meaning-prefer-and-rather/#toc1