'waterish,' i. i. 261, appears only here and in O. iii. iii. 15.
'fortune's alms,' i. i. 281, appears only here and in O. iii. iv. 122.
'decline' seems to be used of the advance of age only in i. ii. 78 and O. iii. iii. 265.
'slack' in 'if when they chanced to slack you,' ii. iv. 248, has no exact parallel in Shakespeare, but recalls 'they slack their duties,' O. iv. iii. 88.
'allowance' (=authorisation), i. iv. 228, is used thus only in K.L., O. i. i. 128, and two places in Hamlet and Hen. VIII.
'besort,' vb., i. iv. 272, does not occur elsewhere, but 'besort,' sb., occurs in O. i. iii. 239 and nowhere else.
Edmund's 'Look, sir, I bleed,' ii. i. 43, sounds like an echo of Iago's 'I bleed, sir, but not killed,' O. v. ii. 288.
'potential,' ii. i. 78, appears only here, in O. i. ii. 13, and in the Lover's Complaint (which, I think, is certainly not an early poem).
'poise' in 'occasions of some poise,' ii. i. 122, is exactly like 'poise' in 'full of poise and difficult weight,' O. iii. iii. 82, and not exactly like 'poise' in the three other places where it occurs.
'conjunct,' used only in ii. ii. 125 (Q), v. i. 12, recalls 'conjunctive,' used only in H. iv. vii. 14, O. i. iii. 374 (F).