| 閉塞 | へいそく | closure, blockage |
| 心筋梗塞 | しんきんこうそく | heart attack, myocardial infarction |
| 要塞 | ようさい | fort, stronghold, fortification |
| 脳梗塞 | のうこうそく | stroke (blocked blood vessel in brain), cerebral infarction |
| 塞がる | ふさがる | to be closed, to be blocked, to be healed (e.g. wound), to be shut up; to be clogged, to be plugged up; to be occupied, to be taken (e.g. accommodation) |
| 塞ぐ | ふさぐ | to stop up, to close up, to block (up), to occupy, to fill up, to take up, to stand in another's way, to plug up, to shut up |
| 塞く | せく | to dam (up) (stream) |
| 梗塞 | こうそく | stoppage, tightness, block, infarction |
| 塞栓 | そくせん | embolus, abnormal substance (i.e. air) circulating in the blood |
| 充塞 | じゅうそく | plug, full up, being filled, stopped up |
