What's the difference between cannot and inapprehensible?

Cannot

Definition:

() Am, is, or are, not able; -- written either as one word or two.

Example Sentences:

(1) The generally accepted hypothesis is a coronary spasm but a direct cardiotoxicity of 5-FU cannot be.
(2) "The Samaras government has proved to be dangerous; it cannot continue handling the country's fate."
(3) Mike Ashley told Lee Charnley that maybe he could talk with me last week but I said: ‘Listen, we cannot say too much so I think it’s better if we wait.’ The message Mike Ashley is sending is quite positive, but it was better to talk after we play Tottenham.” Benítez will ask Ashley for written assurances over his transfer budget, control of transfers and other spheres of club autonomy, but can also reassure the owner that the prospect of managing in the second tier holds few fears for him.
(4) "At the same time, however, we cannot allow one man's untrue version of what happened to stand unchallenged," he said.
(5) The results suggest that RPE cannot be used reliably as a surrogate for direct pulse measurement in exercise training of persons with acute dysvascular amputations.
(6) This decrease cannot be accounted for by increased turnover of the mRNA in the presence of the drug.
(7) So too his statement that "in Zulu culture you cannot leave a woman if she is ready.
(8) The importance of proper disinfection of such equipment cannot be overemphasized.
(9) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
(10) If Deckard cannot see himself in the other, Roy can.
(11) In this way they offer the doctor the chance of preventing genetic handicaps that cannot be obtained by natural reproduction, and that therefore should be used.
(12) Crown prince Sultan Bin Abdel Aziz said yesterday that the state had "spared no effort" to avoid such disasters but added that "it cannot stop what God has preordained.
(13) Unfortunately more than three quantitative data cannot be judged simultaneously without help of mathematical methods.
(14) This is not an argument for the status quo: teaching must be given greater priority within HE, but the flipside has to be an understanding on the part of students, ministers, officials, the public and the media that academics (just like politicians) cannot make everyone happy all of the time.
(15) Gradual evolutionary change by natural selection operates so slowly within established species that it cannot account for the major features of evolution.
(16) Particular attention has been paid to diabetes mellitus and chronic pancreatitis, but a firm conclusion cannot be drawn.
(17) Simple interconversion cannot account for the changes in binding that occur upon adding GMP-PNP or removing magnesium, since the increase in [R2]t exceeds the decrease in [R1]t. Moreover, the apparent amount of high-affinity complex exhibits a biphasic dependence on the concentration of [3H]histamine; an increase at low concentrations is offset by a decrease that occurs at higher concentrations.
(18) Today the physician who treats women with emotional problems during menopause cannot function solely as a psychotherapist; he must deal with both their soma and psyche.
(19) The release of possible peptide hormones into the interpeduncular cistern, where a pool of cerebrospinal fluid and large blood vessels occur, cannot be excluded.
(20) However, valid electroacoustic evaluation of the DMHAs cannot be accomplished using the conventional hearing aid test box.