The word παραβολὴ (parable) is written outside the Gospels only in Hebrews:
Which was a figure (παραβολὴ) for the time then present, in which were offered both gifts and sacrifices, that could not make him that did the service perfect, as pertaining to the conscience, (9:9)
Accounting that God was able to raise him up, even from the dead; from whence also he received him in a figure (παραβολὴ). (11:19)
While a parable can be taken as a type, illustration, or figure, the writer of Hebrews uses different words to express those different meanings (KJV):
Let us labour therefore to enter into that rest, lest any man fall after the same example (ὑποδείγματι) of unbelief. (4:11 - also in 8:5 and 9:23)
Who serve unto the example (ὑποδείγματι) and shadow of heavenly things, as Moses was admonished of God when he was about to make the tabernacle: for, See, saith he, that thou make all things according to the pattern (τύπον) shewed to thee in the mount. (8:5)
For Christ is not entered into the holy places made with hands, which are the figures (ἀντίτυπα) of the true; but into heaven itself, now to appear in the presence of God for us (9:24)
Given the different uses of the different words which convey a similar meaning, the writer's choice of parable in both 9:9 and 11:19 seems purposeful to express that particular type of example. In other words, the writer means specifically παραβολὴ and not ὑποδείγματι or τύπον or ἀντίτυπα.
The second use is in describing Abraham's offering of Isaac:
By faith Abraham, when he was tried, offered Isaac: and he that had received the promises, offered up his only begotten son; (To whom it was said: In Isaac shall thy seed be called.) Accounting that God is able to raise up even from the dead. Whereupon also he received him for a parable. (11-17-19 DRA)
Πίστει προσενήνοχεν Ἀβραὰμ τὸν Ἰσαὰκ πειραζόμενος καὶ τὸν μονογενῆ προσέφερεν, ὁ τὰς ἐπαγγελίας ἀναδεξάμενος, πρὸς ὃν ἐλαλήθη ὅτι ἐν Ἰσαὰκ κληθήσεταί σοι σπέρμα λογισάμενος ὅτι καὶ ἐκ νεκρῶν ἐγείρειν δυνατὸς ὁ θεός, ὅθεν αὐτὸν καὶ ἐν παραβολῇ ἐκομίσατο. (NA28)
In what way does the writer of Hebrews understand Abraham offering Isaac as a parable and not as a figure, type, or example (as in the other words)?