填空

填 tián HSK 5 #2,514

to fill in; to fill out / to stuff; to cram

填补 tiánbǔ HSK 7-9 #9,373

to fill (a gap) / to make up for (a deficiency)

空白 kòngbái HSK 7-9 #5,994

blank space / gap / void

填写 tiánxiě HSK 4 #12,838

to fill in; to fill out (a form)

天空 tiānkōng HSK 5 #3,009

sky

填志愿 tiánzhìyuàn

to fill in university preferences (after gaokao) / to submit one's application choices

空档 kòngdàng

gap (between objects) / interval of time between events / free slot (in a schedule) / market gap

填词 tiáncí #36,280

to write lyrics for an existing tune / to compose a ci poem (in a fixed metrical pattern) / to fill in lyrics

填充 tiánchōng HSK 7-9 #13,702

to fill / to stuff / to pad

空窗期 kōngchuāngqī

gap period; lull; hiatus / period between jobs or relationships / window period (between infection and detectable antibodies)