reality, truth, seed, fruit, nut
実 centers on something concrete and true: the actual substance of a thing, whether a physical seed or fruit, or the abstract reality and truth behind appearances.
reality; actuality; truth; fact; actual conditions
as a matter of fact; by the way; to tell you the truth; to be honest; frankly; actually
fact; truth; reality
reality; actuality; hard fact
enforcement; implementation; putting into practice; carrying out; operation; working (e.g. working parameters); enactment
certain; sure; definite; reliable; sound; solid; safe; secure
experiment; experimentation
execution (e.g. of a plan); carrying out; (putting into) practice; action; implementation; fulfillment; realization
implementation (e.g. of a system); materialization; materialisation; realization; realisation; actualization; actualisation
truth; reality
fruit; nut
truth; reality
actual state (of things); actual conditions; actual scene
(one's parents') home
achievements; actual results; accomplishments; past results; track record
fullness; completeness; perfection; substantiality
substance; essence
real feeling; actual feeling
practical use; utility
really; truly; indeed; very; extremely; terribly
(real) ability; true strength; merit; efficiency; competency
practice; putting into practice; implementation
true state; actual condition; reality
practice (in the field); training (esp. practical and hands-on); practical exercise; drill
実 is the modern simplified form of 實. The older form combines 宀 (roof) with 貫 (pierce, string together), suggesting something solid or full under a roof, like stored grain or treasure. The modern form retains the roof and simplifies the lower part.
Under a roof 宀, there is a full, solid shape like a seed or fruit. Something real and true is stored inside, like a nut that holds the truth of the tree.
For ジツ, imagine a jitsu (a martial arts technique) that is so real and effective it feels like a solid seed of truth: jitsu -> ジツ.