Articulate!

This puzzle features a strange-looking Articulate board, five Articulate cards with six clues each, and one final numbered card.

The natural place to start is with the clues. The six clues on each Articulate card have associated categories, which are: Person, World, Object, Action, Nature, Random.

Category	Card 1	Card 2	Card 3	Card 4	Card 5
Person	BEGUM	DECKHAND	NECKER	ORGANIST	WHITEHEAD
World	COCHIN	GORGAN	LIVERPOOL	OUTBACK	PALMIRA
Object	ARMOUR	CHINO	NAPALM	SLIVER	VERMOUTH
Action	APPEAR	BACKSWING	FARM	HANDLE	UNCLIP
Nature	GUMMA	HEADWATER	LIPASE	RINGNECK	SISKIN
Random	EARLIER	JACKLEG	LEGAL	MOUTHY	SKINT

There are lots of body parts hidden inside the clue answers! Moreover, for each identified body part, it appears exactly twice; once at the end of an answer, and once at the start. This suggests we should join those two answers together, with the common body part being the "articulation". Then, notice that the remaining letters flanking the articulating body part form a word, which is an answer to one of the clues in the numbered card!

For example, BEGUM pairs with GUMMA to give BE(GUM)MA. The remaining word BEMA means a podium, which is the 9th numbered clue. The "4" next to "Podium" instructs us to take the 4th letter of BEMA, which is A.

Now finally, to determine the ordering. The Articulate board, thus far unused, provides this. From the "Start" space, the first two spaces are "Random" categories. There is exactly one pair of articulating Articulate answers that are both from the Random category: JACK(LEG)AL = JACKAL, from which we extract the J due to the numbered clue "(1) Canid".

Going around the board in this manner provides us the ordering. The extracted letters spell JOINT FOR TALKING, referring to the TEMPOROMANDIBULAR JOINT, the answer to this puzzle.

Clue #1	Clue #2	Leftover word	Numbered clue	Extracted letter
START
JACKLEG	LEGAL	JACKAL	Canid (1)	J
SLIVER	LIVERPOOL	SPOOL	Roll (4)	O
NAPALM	PALMIRA	NAIRA	Currency (3)	I
UNCLIP	LIPASE	UNCASE	Remove from container (2)	N
OUTBACK	BACKSWING	OUTSWING	Type of delivery in cricket (3)	T
FARM	ARMOUR	FOUR	Number (1)	F
COCHIN	CHINO	COO	Soft call (2)	O
VERMOUTH	MOUTHY	VERY	Much (3)	R
SISKIN	SKINT	SIT	Rest on glutes (3)	T
BEGUM	GUMMA	BEMA	Podium (4)	A
APPEAR	EARLIER	APPLIER	Candidate (4)	L
DECKHAND	HANDLE	DECKLE	Frame used in papermaking (4)	K
WHITEHEAD	HEADWATER	WHITEWATER	Rapids (3)	I
RINGNECK	NECKER	RINGER	Of lactate fame (3)	N
GORGAN	ORGANIST	GIST	General vibe (1)	G
FINISH