交叉 jiāochā to cross
to cross; to intersect; to overlap
How to remember 交叉: 交 hand over + 叉 fork = to cross.
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How it is used
- To cross/intersect, or overlap - 两条路交叉 (liǎng tiáo lù jiāochā) the two roads intersect, 交叉路口 (jiāochā lùkǒu) an intersection.
- Also figurative 'interdisciplinary/overlapping': 交叉学科 (jiāochā xuékē) a cross-disciplinary field, 交叉感染 (jiāochā gǎnrǎn) cross-infection.
- 叉 (chā) is the fork/cross shape; the word covers both physical crossing and conceptual overlap.