This root form (lemma) is used in 2 different forms in the NT: ἁφῆς (GFS), ἁφῶν (GFP).
It is glossed in 2 different ways: ‘joint’, ‘joints’.
OET EPH 4:16 Greek word=ἁφῆς (hafaʸs) Morphology=GFS English gloss=‘joint’ SR GNT EPH 4:16 word 11
OET COL 2:19 Greek word=ἁφῶν (hafōn) Morphology=GFP English gloss=‘joints’ SR GNT COL 2:19 word 13