to fold up;  to fold into layers
 if it is the case that ...
 to carry;  to bring (to a place)
 won't;  hasn't;  isn't;  won't you
 difference;  distinction;  discrepancy;  mistake;  error
 future;  possible;  potential;  prospective
 using freely;  making full use of;  having a good command of;  working (someone) hard;  driving (someone) on
 the future (usually distant);  future tense;  the world to come
 to cut open;  to clear (land);  to cut (a path, road, etc.);  to carve out (a new career, future, etc.);  to open up (a new field)
 to ascend;  to go up;  to ascend (as a natural process, e.g. the Sun);  to rise;  to go to (the capital);  to be promoted;  to add up to
 stairs;  stairway;  staircase
 walking;  pace;  step;  course (of history, one's life, etc.);  history;  pitch (of a screw, etc.)