force, fort(-ress), rock, strength(-en), (X most) strong (hold)

“Fortress” From Concise Bible Dictionary:

The terms “fortress,” “stronghold,” and “castle” mostly refer to a part of a city that was more strongly fortified than by the mere walls. Proverbs 18:1919A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle. (Proverbs 18:19) speaks of the “bars of a castle.” There was such a place in Jerusalem when the city was taken by David, which was held by the Jebusites (2 Sam. 5:6-76And the king and his men went to Jerusalem unto the Jebusites, the inhabitants of the land: which spake unto David, saying, Except thou take away the blind and the lame, thou shalt not come in hither: thinking, David cannot come in hither. 7Nevertheless David took the strong hold of Zion: the same is the city of David. (2 Samuel 5:6‑7)). The Romans had a “castle” in Jerusalem, to which Paul was carried when he was seized by the Jews (Acts 21:34, 3734And some cried one thing, some another, among the multitude: and when he could not know the certainty for the tumult, he commanded him to be carried into the castle. (Acts 21:34)
37And as Paul was to be led into the castle, he said unto the chief captain, May I speak unto thee? Who said, Canst thou speak Greek? (Acts 21:37)). This may have been the same that was called ANTONIA, a fortress built by Herod the Great, adjoining the temple, as described by Josephus: Wars, v. 5. 8. The Psalmist often calls Jehovah his rock and fortress (Psa. 18:22The Lord is my rock, and my fortress, and my deliverer; my God, my strength, in whom I will trust; my buckler, and the horn of my salvation, and my high tower. (Psalm 18:2); Psa. 31:33For thou art my rock and my fortress; therefore for thy name's sake lead me, and guide me. (Psalm 31:3); Psa. 71:33Be thou my strong habitation, whereunto I may continually resort: thou hast given commandment to save me; for thou art my rock and my fortress. (Psalm 71:3); Psa. 91:22I will say of the Lord, He is my refuge and my fortress: my God; in him will I trust. (Psalm 91:2)).
 
A fortress on the Red Sea.

“Rock” From Concise Bible Dictionary:

Two words are principally employed for this word. One is sela, “an elevation of strength, immovable:” used symbolically for Jehovah as the rock of His people: “Jehovah is my rock and my fortress” (Psa. 18:22The Lord is my rock, and my fortress, and my deliverer; my God, my strength, in whom I will trust; my buckler, and the horn of my salvation, and my high tower. (Psalm 18:2)). He hath “set my feet upon a rock, and established my goings” (Psa. 40:22He brought me up also out of an horrible pit, out of the miry clay, and set my feet upon a rock, and established my goings. (Psalm 40:2)).
In the New Testament anyone who heard and did the sayings of the Lord is compared to a man who built his house upon the rock which nothing could shake (Matt. 7:24-2524Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock: 25And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock. (Matthew 7:24‑25); Luke 6:4848He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock. (Luke 6:48)). The Lord said, “Thou art Peter (πέτρος), and upon this rock (πέτρα) I will build My church.” The church is being built upon what Peter confessed, Christ Himself, the Son of the living God (Matt. 16:16-1816And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17And Jesus answered and said unto him, Blessed art thou, Simon Bar-jona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. 18And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. (Matthew 16:16‑18); compare 1 Cor. 3:1111For other foundation can no man lay than that is laid, which is Jesus Christ. (1 Corinthians 3:11); 1 Cor. 10:44And did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that Rock was Christ. (1 Corinthians 10:4)).

Strong’s Dictionary of Hebrew Words:

Number:
4581 (find all occurrences in KJV Bible)
Transliteration:
ma`owz
Phonic:
maw-oze’
Meaning:
(also mauwz {maw-ooz'}); or mahoz {maw-oze'} (also ma,uz {maw-ooz'}; from 5810; a fortified place; figuratively, a defence
KJV Usage:
force, fort(-ress), rock, strength(-en), (X most) strong (hold)