You may be right that the same words do not always signify the exact same things but it is unlike The Lord to have a random trumpet (or anything) with no connection to anything else anywhere in scripture.
a. He regularly makes the word thilipsis and orge men the same thing.
b. He takes the word of lost men hiding in caves over the ANNOUNCED wrath of GOD in heaven before the throne at the 7th trump
God even has an O.T. witness to the order of what takes place, uses the same verbiage as the N.T. (shout, ascension and victory)
Study the siege and fall of Jericho....it even leaves out the "7" thunders because they are not known....it represents 1st victory after coming out of the wilderness of SIN and into the promise land of REST....just a short breakdown of the numbers follows to a "T" the order of Revelation and the seals and trumpets with the culmination on the 7th day, a BLAST of the TRUMPET, ASCENSION, VICTORY <--SAME verbiage as 1st Thessalonians 4 and 1st Corinthians 15.
Joshua 6 <--and note MOSES (the LAW) could not deliver anyone, but took them up to the land of Promise, but it was Joshua (Savior) that delivered them into the land of Promise
The order
Joshua and men of war encompass Jericho 6 TIMES <-The first six seals
Joshua and men of war encompass city 7 times on 7th day with 7 priests blowing trumpets before the ark<---7th seal and 7 trumpets
On 7th time around the city ALL trumps sound as 1 (last trump) When the sound of the LONG blast of the last trump is heard, the people to SHOUT, ASCEND and VICTORY
The above order
6 days around city <-6 seals
7th day around city <-7th seal which initiates 7 trumps <--same as Revelation
Sound trump 7 times with last time a long blast as one TRUMP <--7 trumps including the 7th and final trump
A SHOUT, ASCENSION and VICTORY
NOTE the following
For the Lord Himself will descend from heaven with a shout, with the voice of the archangel, and with the trumpet of God; and the dead in Christ shall rise first. Then we who are alive and remain will be caught up together with them in the clouds to meet the Lord in the air, and so we shall always be with the Lord
Behold, I tell you a mystery; we will not all sleep, but we will all be changed, in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we will be changed. For this perishable must put on the imperishable, and this mortal must put on immortality But when this perishable will have put on the imperishable, and this mortal will have put on immortality, then will come about the saying that is written, "DEATH IS SWALLOWED UP in victory.
but in the days of the voice of the seventh angel, when he is about to sound, then the mystery of God is finished, as He preached to His servants the prophets.
Same order, same verbiage and it fits to a "t" and even leaves out the 7 thunders which are hidden and not revealed......
6 seals
7th seal initiates 7 trumpets
7th trumpet a shout, ascension and victory
NO ONE will ever change my mind that the resurrection/change takes place at the 7th trump. The bible does not teach an imminent return of Christ, but rather a post great tribulation/pre-wrath ingathering.....God's wrath is announced in HEAVEN before the throne at the sounding of the 7th trump and through and through there is evidence such as the above.........