Lisp and maxima properties of functions



I am struggling to understand the relationship between lisp and maxima 
properties on functions.

For example, I look at the properties of sin:

(%i1) properties(sin);
(%o1) [mirror symmetry, deftaylor, integral, distributes over bags, rule,
                                                         noun, gradef, 
transfun]

(%i2) :lisp (properties '%sin)
((MLIST SIMP) mirror symmetry $DEFTAYLOR $INTEGRAL distributes over bags 
$RULE
  $NOUN $GRADEF)
(%i2) :lisp (properties '$sin)
((MLIST SIMP) $TRANSFUN)
(%i2) :lisp (symbol-plist '%sin)
(TEX-RBP 130 TEXSYM (\sin ) TEXWORD \sin  TEX TEX-PREFIX
  COMMUTES-WITH-CONJUGATE T SP2
  ((%SUM)
   ((MTIMES) ((MEXPT) -1 *INDEX)
    ((MEXPT) ((MFACTORIAL) ((MPLUS) ((MTIMES) 2 *INDEX) 1)) -1)
    ((MEXPT) SP2VAR ((MPLUS) ((MTIMES) 2 *INDEX) 1)))
   *INDEX 0 $INF)
  RECIP %CSC EXP-FORM (EXPEXP-FUNS ((1 . 1) 1 . 1) (-1 . 1) (-1 . 1) (2 
. 1))
  INTEGRAL ((X) ((MTIMES) -1 ((%COS) X))) SUBC
  ($FLOAT $NUMER $BFLOAT $%PIARGS $%IARGS $TRIGINVERSES $TRIGEXPAND
   $EXPONENTIALIZE $HALFANGLES $TRIGSIGN $LOGARC)
  KIND (C) REFLECTION-RULE #<COMPILED-FUNCTION ODD-FUNCTION-REFLECT>
  DISTRIBUTE_OVER (MLIST $MATRIX MEQUAL) OPERATORS SIMP-%SIN
  LISP-FUNCTION-TO-USE SIN TRANSLATE
  #<COMPILED-FUNCTION 20 27 (DEF%TR %LOG (FORM) ...)-3-1> REVERSEALIAS 
$SIN NOUN
  $SIN $INVERSE %ASIN FLOATPROG SINBIGFLOAT GRAD ((X) ((%COS) X)))


1.  What use are the maxima properties, and how are the accessed?

(%i7) get(sin,noun);
(%o7)                                false
(%i8) get(sin,'noun);
(%o8)                                false
(%i9) get(sin,"noun");
(%o9)                                false
(%i10) get(verbify(sin),'noun);
(%o10)                               false
(%i11) get(verbify(sin),"noun");
(%o11)                               false
(%i12) get(verbify(sin),?$NOUN);
(%o12)                               false
(%i13) get(verbify(sin),?$noun);
(%o13)                               false


2.  Is there a relation between the lisp and maxima properties?

I don't see this for elliptic_kc for a fresh maxima session

(%i1)  properties(elliptic_kc);
(%o1)                             [transfun]
(%i2) :lisp (symbol-plist '%elliptic_kc)
(GRAD
  ((M)
   ((MTIMES) ((RAT) 1 2)
    ((MPLUS) ((%ELLIPTIC_EC) M)
     ((MTIMES) -1 ((%ELLIPTIC_KC) M) ((MPLUS) 1 ((MTIMES) -1 M))))
    ((MEXPT) ((MPLUS) 1 ((MTIMES) -1 M)) -1) ((MEXPT) M -1)))
  SIMPLIM%FUNCTION SIMPLIM%ELLIPTIC_KC OPERATORS SIMP-%ELLIPTIC_KC)

but while I was messing around with properties I ended up with

(%i99)  properties(elliptic_kc);
(%o99)           [transfun, noun, gradef, limit function, rule]

Somehow I managed to update the maxima properties from the lisp properties.