1‘she thinks I am pining away from love’
languish, decline, go into a decline, lose strength, weaken, waste away, dwindle, wilt, wither, fade, flag, sicken, droop, brood, mope, moon
2‘Leopold was clearly pining for his son’
yearn, long, ache, sigh, hunger, thirst, itch, languish, carry a torch
miss, mourn, lament, grieve over, cry over, weep over, fret about, shed tears for, bemoan, rue, regret the absence of, regret the loss of, hanker after, hanker for, eat one's heart out over, cry out for
We take a look at several popular, though confusing, punctuation marks.