Analogy type question:
$(1)$ Inner concave notch of kidney : Hilum :: Broad funnel-shaped part of renal pelvis : ............. .
$(2)$ Renal tubule begins with a double-walled cup-like structure called Bowman's capsule :: Bowman's capsule along with glomerulus : ............. .

(N/A) $(1)$ Renal calyx (or Calyces)
$(2)$ Malpighian body (or Renal corpuscle)
Explanation:
$(1)$ The hilum is the notch on the inner concave side of the kidney. Similarly,the renal pelvis projects into funnel-shaped structures called calyces.
$(2)$ The renal tubule starts with Bowman's capsule. The combination of Bowman's capsule and the enclosed glomerulus is collectively known as the Malpighian body or renal corpuscle.