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general::
noun ADJ. steep | broad, wide | narrow | elegant, grand, great | rickety | curving, spiral, sweeping, twisting, winding | moving | main | outside | back VERB + STAIRCASE ascend, climb, go/run, etc. up, mount | descend, go/run, etc. down | use STAIRCASE + VERB lead to sth The spiral staircase led to an upper gallery. PREP. on the ~ They passed each other on the staircase. PHRASES the bottom/foot/head/top of the staircase
Oxford Collocations Dictionary