Thank you for the introduction.
> “Buddha” is not a name, but a title; it means “he who has woken up”,derived from the past participle of the Indic verbal stem budh, “to wake, wake up, be awake”.
As far as I can conclude from the Sutta, "Buddha" means "he who has comprehended":
From Pasadika sutta (DN 29):
Yañca kho, cunda, sadevakassa lokassa samārakassa sabrahmakassa sassamaṇabrāhmaṇiyā pajāya sadevamanussāya diṭṭhaṃ sutaṃ mutaṃ viññātaṃ pattaṃ pariyesitaṃ anuvicaritaṃ manasā, sabbaṃ tathāgatena abhisambuddhaṃ, tasmā ‘tathāgato’ti vuccati. Yañca, cunda, rattiṃ tathāgato anuttaraṃ sammāsambodhiṃ abhisambujjhati, yañca rattiṃ anupādisesāya nibbānadhātuyā parinibbāyati, yaṃ etasmiṃ antare bhāsati lapati niddisati.
'Cunda, whatever in this world with its devas and maras and Brahmas, with its ascetics and Brahmins, its princes and people, is seen by people, heard, sensed, cognized, whatever was ever achieved, sought after or mentally pondered upon -- all that has been fully comprehended [abhisambuddham] by the Tathagata. That is why he is called Tathagata. Between the night in which the Tathagata comprehends [abhisambujjhati] the unequalled Perfect Comprehension (samma-sambodhi), Cunda, and the night in which he goes out to the Nibbana-element without remainder, whatever he proclaims, says or explains is so and not otherwise.'
Though the verb 'bujjhati' has a meaning 'awakes', this meaning is mentioned only in few places in the Commentaries:
Bujjhatīti kilesasantānaniddāya uṭṭhahati, cattāri vā ariyasaccāni paṭivijjhati, nibbānameva vā sacchikaroti.
"Awakes - arises from the sleep of defilement-flow"
(Dhammasangani-Atthakatha)
In the suttas, Bodhi is precisely defined as the Comprehension, of the four Actualities for the Noble Ones (ariya-sacca).
<
strong>Perfect Comprehension (samma-sambodhi) comprises a whole universe:
Comprehension of the Four Actualities for the Noble Ones (cattāro ariyasaccāni)
Yāvakīvañca me, bhikkhave, imesu catūsu ariyasaccesu evaṃ tiparivaṭṭaṃ dvādasākāraṃ yathābhūtaṃ ñāṇadassanaṃ na suvisuddhaṃ ahosi, neva tāvāhaṃ, bhikkhave, sadevake loke samārake sabrahmake sassamaṇabrāhmaṇiyā pajāya sadevamanussāya ‘anuttaraṃ sammāsambodhiṃ abhisambuddho’ti paccaññāsiṃ.
"And, monks, as long as this — my three-round, twelve-permutation knowledge & vision concerning these four noble truths as they have come to be — was not pure, I did not claim to have directly awakened to the right self-awakening unexcelled in the cosmos with its deities, Maras, & Brahmas, with its contemplatives & brahmans, its royalty & commonfolk. [But as soon as this — my three-round, twelve-permutation knowledge & vision concerning these four noble truths as they have come to be — was truly pure, then I did claim to have directly awakened to the right self-awakening unexcelled in the cosmos with its deities, Maras & Brahmas, with its contemplatives & brahmans, its royalty & commonfolk. Knowledge & vision arose in me: 'Unprovoked is my release. This is the last birth. There is now no further becoming.'"]
http://www.accesstoinsight.org/tipitaka/sn/sn56/sn56.011.than.html