sure, certain (な adj.)

to be realized, to come true

to experiment

to carry out, to execute

truth, reality

substance, essence

practice, put into practice

truth, fact

actual expense, cost price

truth, reality, sincerity, fidelity, kindness, faith, substance, essence

industrialist, businessman

real condition, actual circumstances, actual state of affairs

fullness, completion, perfection, substantiality, enrichment

sincere, honest, faithful

compelling, serious, severe, acute, earnest, pressing, urgent

fidelity, faithfulness

fruit, nut, berry.

excuse

feelings (actual, true)

practice, training

achievements, actual results

real thing, original

practical use, utility

merit, efficiency, arms, force

example, illustration

to bear fruit, to ripen

reality

fact, truth, reality

experiment

implementation, materialization, realization